NT breakdown

My computer keeps rebooting. Sometimes it might take 20 tries for it come up, then it starts rebooting again; sometimes it stays up for 30 seconds, sometimes 5 minutes. Have tried to run my virus scanner and super anti-spyware, but they never have time to finish before it shuts off. Using my sister's computer to send this. Did manage to get a Hijack This report. Thanks for any advice

Logfile of HijackThis v1.99.1
Scan saved at 5:58:30 PM, on 9/12/2008
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\savedump.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\PCSecurityShield\The Shield Deluxe 2008\avp.exe
C:\WINNT\System32\svchost.exe
C:\Program Files\Ahead\InCD\InCDsrv.exe
C:\WINNT\system32\LxrJD31s.exe
C:\WINNT\system32\pctspk.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\system32\stisvc.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\System32\mspmspsv.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\Explorer.EXE
C:\Program Files\PCSecurityShield\The Shield Firewall\FireWall.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\BillP Studios\WinPatrol\winpatrol.exe
C:\Program Files\PCSecurityShield\The Shield Deluxe 2008\avp.exe
C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
C:\Program Files\Palm\Hotsync.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\PCSecurityShield\The Shield Firewall\GetNetTime.exe
C:\Program Files\Hijackthis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = actsvr.comcastonline.com:8100
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = cdn
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {0AD8F237-CA9E-47BA-A14D-C6EC381DC112} - C:\WINNT\system32\awttt.dll (file missing)
O2 - BHO: Farstone Url Blocker - {316AEF8D-3C37-423E-9E6E-13820A9DC37A} - C:\PROGRA~1\PCSECU~1\THESHI~1\IrlOnIE.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O2 - BHO: Farstone Popup Blocker - {E22F9B9D-1A1F-473E-BED6-D8BC152441F4} - C:\PROGRA~1\PCSECU~1\THESHI~1\FARPOP~1.DLL
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [CountrySelection] pctptt.exe
O4 - HKLM\..\Run: [MediaFace Integration] C:\Program Files\Fellowes\MediaFACE 4.0\SetHook.exe
O4 - HKLM\..\Run: [LWBMOUSE] C:\Program Files\Browser Mouse\Browser Mouse\1.0\lwbwheel.exe
O4 - HKLM\..\Run: [LoadQM] loadqm.exe
O4 - HKLM\..\Run: [dwStart] C:\Program Files\PCSecurityShield\The Shield Firewall\FireWall.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [WinPatrol] C:\Program Files\BillP Studios\WinPatrol\winpatrol.exe
O4 - HKLM\..\Run: [AVP] "C:\Program Files\PCSecurityShield\The Shield Deluxe 2008\avp.exe"
O4 - HKLM\..\Run: [HotSync] "C:\Program Files\PalmSource\Desktop\HotSync.exe" -AllUsers
O4 - HKCU\..\Run: [PhotoShow Deluxe Media Manager] C:\PROGRA~1\Ahead\NEROPH~1\data\Xtras\mssysmgr.exe
O4 - HKCU\..\Run: [ccleaner] "C:\Program Files\CCleaner\ccleaner.exe" /AUTO
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: HotSync Manager.lnk = C:\Program Files\Palm\Hotsync.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_02\bin\ssv.dll
O9 - Extra button: Web Anti-Virus statistics - {1F460357-8A94-4D71-9CA3-AA4ACF32ED8E} - C:\Program Files\PCSecurityShield\The Shield Deluxe 2008\scieplugin.dll
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM95\aim.exe
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINNT\System32\Shdocvw.dll
O12 - Plugin for .mp3: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin4.dll
O12 - Plugin for .mpeg: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin3.dll
O12 - Plugin for .mpg: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin3.dll
O16 - DPF: Yahoo! Blackjack - http://download.games.yahoo.com/game...ts/y/jt0_x.cab
O16 - DPF: Yahoo! Chess - http://download.games.yahoo.com/game...ts/y/ct2_x.cab
O16 - DPF: Yahoo! Dominoes - http://download.games.yahoo.com/game...s/y/dot2_x.cab
O16 - DPF: Yahoo! Freecell Solitaire - http://yog55.games.scd.yahoo.com/yog/y/fs10_x.cab
O16 - DPF: Yahoo! Literati - http://download.games.yahoo.com/game...ts/y/tt2_x.cab
O16 - DPF: Yahoo! MahJong Solitaire - http://download.games.yahoo.com/game.../y/mjst4_x.cab
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/kos/english...an_unicode.cab
O16 - DPF: {4C39376E-FA9D-4349-BACC-D305C1750EF3} (EPUImageControl Class) - http://tools.ebayimg.com/eps/wl/acti..._v1-0-3-12.cab
O16 - DPF: {4FE89055-5300-469E-AFAD-DEB3181EDE76} (PearsonAsstX Control) - http://www.mathxl.com/applets/PearsonInstallAsst.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2...ll/xscan53.cab
O16 - DPF: {C4DD6732-1E82-4AE7-BD94-180331B84082} (DeltaCVX Control) - http://www.mathxl.com/applets/DeltaCVX.cab
O16 - DPF: {E7DBFB6C-113A-47CF-B278-F5C6AF4DE1BD} - http://download.abacast.com/download...basetup162.cab
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O20 - Winlogon Notify: htvjzyfn - htvjzyfn.dll (file missing)
O20 - Winlogon Notify: klogon - C:\WINNT\system32\klogon.dll
O20 - Winlogon Notify: torqacpd - torqacpd.dll (file missing)
O23 - Service: The Shield Deluxe 2008 (AVP) - PCSecurityShield - C:\Program Files\PCSecurityShield\The Shield Deluxe 2008\avp.exe
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: InCD Helper (read only) (InCDsrvR) - Nero AG - C:\Program Files\Ahead\InCD\InCDsrv.exe
O23 - Service: iPod Service - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Lexar JD31 (LxrJD31s) - Unknown owner - C:\WINNT\SYSTEM32\LxrJD31s.exe
O23 - Service: W2k PCtel speaker phone (Pctspk) - PCtel, Inc. - C:\WINNT\system32\pctspk.exe