Cannot access antivirus company websites & links from Google search results

Hi,

I believe I have some sort of malware/virus loaded on my computer. Here are the symptoms I have observed so far:

--Whenever clicking on Google search results, I'm redirected to random and irrelevant websites (e.g. app.validclick.com & clicks.smartbizsearch.com). Moreover, when trying to access antivirus software companies' websites I cannot get through (e.g. McAfee, Norton, Trend Micro, Panda, etc.).
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--At times on startup Zone Alarm does not start up.
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--I get the following error message window pop up at start up:

"Generic Host Process for Win32 Services has encountered a problem and needs to close. We are sorry for the inconvenience."

Here are the details when I select the "click here" link to find out more about the error:

Error signature:
szAppName: svchost.exe
szAppVer: 5.1.2600.0
szModName: advapi32.dll
szModVer: 5.1.2600.1106
offset: 00016439

Error Report Contents:
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER12.tmp.dir00\svchost.exe.mdmp
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER12.tmp.dir00\appcompat.txt

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--Also get the following application error for wuauclt.exe:
"The instruction at "0x370013e8" referenced memory at "0x63017790". The memory could not be "written". Click on OK to terminate the program"

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--Also get the following error message window pop up:

WMI has encountered a problem and needs to close. We are sorry for the inconvenience.

Here are the details when I select the "click here" link to find out more about the error:

Error signature:
szAppName: wmiprvse.exe
szAppVer: 5.1.2600.1106
szModName: advapi32.dll
szModVer: 5.1.2600.1106
offset: 00016439

Error Report Contents:
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER2CE.tmp.dir00\wmiprvse.exe.mdmp
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER2CE.tmp.dir00\appcompat.txt
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER2CF.tmp.dir00\wmiprvse.exe.mdmp
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER2CF.tmp.dir00\appcompat.txt
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER2DA.tmp.dir00\wmiprvse.exe.mdmp
C:\DOCUME~1\Owner\LOCALS~1\Temp\WER2DA.tmp.dir00\appcompat.txt
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Attached is a HJT log for you to review.

Appreciate any help to fix these problems and get rid of the malware/virus.

Thanks,

ff8998