Bad image message

Hi

I get a series of Bad Image messages when I boot up and a separate Bad Image message when I open individual applications. This is accompanied by the line "The application or DLL C:\windows\system32\wujsjg.dll [not always the same 6letter file name] is not a valid Windows image. Please check against your installation diskette."

I ran an HJT scan and the logfile is below:

Logfile of HijackThis v1.99.1
Scan saved at 09:12:47, on 23/04/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)

Running processes:
C:\windows\System32\smss.exe
C:\windows\system32\csrss.exe
C:\windows\system32\winlogon.exe
C:\windows\system32\services.exe
C:\windows\system32\lsass.exe
C:\windows\system32\svchost.exe
C:\windows\system32\svchost.exe
C:\windows\System32\svchost.exe
C:\windows\system32\svchost.exe
C:\windows\system32\svchost.exe
C:\windows\system32\svchost.exe
C:\Program Files\AVG\AVG9\avgchsvx.exe
C:\Program Files\AVG\AVG9\avgrsx.exe
C:\windows\system32\spoolsv.exe
C:\Program Files\AVG\AVG9\avgcsrvx.exe
C:\windows\system32\svchost.exe
C:\windows\Explorer.EXE
C:\Program Files\a-squared Free\a2service.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
C:\Program Files\AskBarDis\bar\bin\AskService.exe
C:\Program Files\AskBarDis\bar\bin\ASKUpgrade.exe
C:\Program Files\AVG\AVG9\avgwdsvc.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Practical Law\VPN Client\cvpnd.exe
C:\windows\system32\svchost.exe
C:\Program Files\AVG\AVG9\avgam.exe
C:\Program Files\AVG\AVG9\avgnsx.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\Iaantmon.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Kontiki\KService.exe
C:\windows\System32\svchost.exe
C:\windows\system32\nvsvc32.exe
C:\windows\System32\svchost.exe
C:\windows\system32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Common Files\Pure Networks Shared\Platform\nmsrvc.exe
C:\windows\stsystra.exe
C:\Program Files\Dell\Media Experience\DMXLauncher.exe
C:\WINDOWS\System32\DLA\DLACTRLW.EXE
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\Intel\Intel Matrix Storage Manager\Iaanotif.exe
C:\windows\system32\RUNDLL32.EXE
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\Common Files\Pure Networks Shared\Platform\nmctxth.exe
C:\Program Files\Pure Networks\Network Magic\nmapp.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\PROGRA~1\AVG\AVG9\avgtray.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Messenger\Msmsgs.exe
C:\Program Files\Kontiki\KHost.exe
C:\windows\system32\ctfmon.exe
C:\Program Files\Digital Line Detect\DLG.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\AVG\AVG9\avgcsrvx.exe
C:\windows\System32\alg.exe
C:\Program Files\Uniblue\RegistryBooster\registrybooster.exe
C:\Program Files\iPod\bin\iPodService.exe
c:\program files\common files\installshield\updateservice\isuspm.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\Program Files\HP\Digital Imaging\bin\hpqbam08.exe
C:\Program Files\HP\Digital Imaging\bin\hpqgpc01.exe
C:\Program Files\Common Files\InstallShield\UpdateService\agent.exe
C:\Program Files\AVG\AVG9\fixcfg.exe
C:\Program Files\Hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = www.google.co.uk/ig/dell?hl=en&client=dell-usuk&channel=uk&ibd=6070314
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.co.uk/0SEENGB/SAOS01?FORM=TOOLBR
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://g.msn.co.uk/0SEENGB/SAOS01?FORM=TOOLBR
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?linkid=677
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Search,Default_Page_URL = www.google.co.uk/ig/dell?hl=en&client=dell-usuk&channel=uk&ibd=6070314
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://g.msn.co.uk/0SEENGB/SAOS01?FORM=TOOLBR
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R3 - URLSearchHook: AVG Security Toolbar BHO - {A3BC75A2-1F87-4686-AA43-5347D756017C} - C:\Program Files\AVG\AVG9\Toolbar\IEToolbar.dll
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\userinit.exe,C:\windows\system32\sdra64.exe,
O2 - BHO: AskBar BHO - {201f27d4-3704-41d6-89c1-aa35e39143ed} - C:\Program Files\AskBarDis\bar\bin\askBar.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - c:\program files\real\realplayer\rpbrowserrecordplugin.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG9\avgssie.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\System32\DLA\DLASHX_W.DLL
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: AVG Security Toolbar BHO - {A3BC75A2-1F87-4686-AA43-5347D756017C} - C:\Program Files\AVG\AVG9\Toolbar\IEToolbar.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.5.4723.1820\swg.dll
O2 - BHO: Windows Live Toolbar Helper - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O2 - BHO: (no name) - {CA6319C0-31B7-401E-A518-A07C3DB8F777} - (no file)
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: Windows Live Toolbar - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\Windows Live Toolbar\msntb.dll
O3 - Toolbar: Ask Toolbar - {3041d03e-fd4b-44e0-b742-2d9b88305f98} - C:\Program Files\AskBarDis\bar\bin\askBar.dll
O3 - Toolbar: AVG Security Toolbar - {CCC7A320-B3CA-4199-B1A6-9F516DD69829} - C:\Program Files\AVG\AVG9\Toolbar\IEToolbar.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [DMXLauncher] C:\Program Files\Dell\Media Experience\DMXLauncher.exe
O4 - HKLM\..\Run: [DLA] C:\WINDOWS\System32\DLA\DLACTRLW.EXE
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\COMMON~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [IAAnotif] "C:\Program Files\Intel\Intel Matrix Storage Manager\Iaanotif.exe"
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\windows\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\windows\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [hpqSRMon] C:\Program Files\HP\Digital Imaging\bin\hpqSRMon.exe
O4 - HKLM\..\Run: [nmctxth] "C:\Program Files\Common Files\Pure Networks Shared\Platform\nmctxth.exe"
O4 - HKLM\..\Run: [nmapp] "C:\Program Files\Pure Networks\Network Magic\nmapp.exe" -autorun -nosplash
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [AVG9_TRAY] C:\PROGRA~1\AVG\AVG9\avgtray.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [swg] "C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\Msmsgs.exe" /background
O4 - HKCU\..\Run: [kdx] C:\Program Files\Kontiki\KHost.exe -all
O4 - HKCU\..\Run: [ctfmon.exe] C:\windows\system32\ctfmon.exe
O4 - HKCU\..\RunOnce: [UniblueRegistryBooster] "C:\Program Files\Uniblue\RegistryBooster\launcher.exe" delay 20000
O4 - Startup: Xfire.lnk = G:\Program Files\Xfire\Xfire.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Digital Line Detect.lnk = ?
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: VPN Client.lnk = ?
O8 - Extra context menu item: &Windows Live Search - res://C:\Program Files\Windows Live Toolbar\msntb.dll/search.htm
O8 - Extra context menu item: Add to Windows &Live Favorites - http://favorites.live.com/quickadd.aspx
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Google Sidewiki... - res://C:\Program Files\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_96D6FF0C6D236BF8.dll/cmsidewiki.html
O9 - Extra button: HP Smart Select - {DDE87865-83C5-48c4-8357-2F5B1AA84522} - C:\Program Files\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: @C:\Program Files\Messenger\Msgslang.dll,-61144 - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: @C:\Program Files\Messenger\Msgslang.dll,-61144 - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O10 - Unknown file in Winsock LSP: c:\program files\bonjour\mdnsnsp.dll
O11 - Options group: [INTERNATIONAL] International
O18 - Protocol: avgsecuritytoolbar - {F2DDE6B2-9684-4A55-86D4-E255E237B77C} - C:\Program Files\AVG\AVG9\Toolbar\IEToolbar.dll
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG9\avgpp.dll
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: pure-go - {4746C79A-2042-4332-8650-48966E44ABA8} - C:\Program Files\Common Files\Pure Networks Shared\Platform\puresp4.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: rsscac.dll odeuip.dll wujsgj.dll cfblcw.dll uluhak.dll sqlcfw.dll hvkryc.dll sqxsak.dll jznnzm.dll
O20 - Winlogon Notify: avgrsstarter - C:\windows\SYSTEM32\avgrsstx.dll
O20 - Winlogon Notify: dimsntfy - %SystemRoot%\System32\dimsntfy.dll (file missing)
O20 - Winlogon Notify: WgaLogon - C:\windows\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - C:\Program Files\a-squared Free\a2service.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: ASKService - Unknown owner - C:\Program Files\AskBarDis\bar\bin\AskService.exe
O23 - Service: ASKUpgrade - Unknown owner - C:\Program Files\AskBarDis\bar\bin\ASKUpgrade.exe
O23 - Service: AVG Security Toolbar Service - Unknown owner - C:\Program Files\AVG\AVG9\Toolbar\ToolbarBroker.exe
O23 - Service: AVG WatchDog (avg9wd) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG9\avgwdsvc.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Cisco Systems, Inc. VPN Service (CVPND) - Cisco Systems, Inc. - C:\Program Files\Practical Law\VPN Client\cvpnd.exe
O23 - Service: Google Update Service (gupdate1ca3c1d199253fe) (gupdate1ca3c1d199253fe) - Unknown owner - C:\Program Files\Google\Update\GoogleUpdate.exe" /svc (file missing)
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Intel Corporation - C:\Program Files\Intel\Intel Matrix Storage Manager\Iaantmon.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Unknown owner - C:\Program Files\Java\jre6\bin\jqs.exe" -service -config "C:\Program Files\Java\jre6\lib\deploy\jqs\jqs.conf (file missing)
O23 - Service: KService - Kontiki Inc. - C:\Program Files\Kontiki\KService.exe
O23 - Service: Pure Networks Net2Go Service (nmraapache) - Unknown owner - C:\Program Files\Pure Networks\Network Magic\WebServer\bin\nmraapache.exe" -k runservice (file missing)
O23 - Service: Pure Networks Platform Service (nmservice) - Pure Networks, Inc. - C:\Program Files\Common Files\Pure Networks Shared\Platform\nmsrvc.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\windows\system32\nvsvc32.exe

Could you advise me as to what to do next?

Many thanks