Internet Search Malware Help

[vf_omega]

I have this malware that, when clicking on a link from a search result (google, bing, ect.), redirects me to an advertisement site. The only way to get past it is if I copy and paste the address from the search result onto the address bar. I tried scanning with Spybot S&D, which remove other viruses, but was unable to fix this problem. Please help me & thank you.

Here is my HJT log:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 4:43:17 PM, on 1/31/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.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\LEXBCES.EXE
C:\Program Files\AVG\AVG9\avgcsrvx.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Program Files\AVG\AVG9\avgwdsvc.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\AVG\AVG9\avgnsx.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\AVG\AVG9\avgtray.exe
C:\Program Files\Dell AIO Printer A920\dlbkbmgr.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Dell AIO Printer A920\dlbkbmon.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

O4 - HKLM\..\Run: [ATIPTA] "C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe"
O4 - HKLM\..\Run: [AVG9_TRAY] C:\PROGRA~1\AVG\AVG9\avgtray.exe
O4 - HKLM\..\Run: [Dell AIO Printer A920] "C:\Program Files\Dell AIO Printer A920\dlbkbmgr.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG9\avgpp.dll
O20 - Winlogon Notify: avgrsstarter - C:\WINDOWS\SYSTEM32\avgrsstx.dll
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AVG Free WatchDog (avg9wd) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG9\avgwdsvc.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: Intel NCS NetService (NetSvc) - Intel(R) Corporation - C:\Program Files\Intel\PROSetWired\NCS\Sync\NetSvc.exe
O23 - Service: SiS WirelessLan Service (SiSWLSvc) - Unknown owner - C:\Program Files\802.11 Wireless LAN\802.11g Pen Size Wireless USB 2.0 Adapter HW.32 V1.10\SiSWLSvc.exe

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