Hi, i need assistance in removing virus.

anyone else been hit with some new audio ad that randomly comes on? in summary, my computer will often launch some "congradulations, you've been selected for a free nano etc." ad.

While looking at the applications, nothing is running. Once, I did see an IE browser running in the applications but it was not on my screen/or taskbar.

Mostly, it comes on every few min or so and through the speakers. I've run spybot but nothing comes up, i/e it's not being detected.

what the hell is this, and how can i locate and remove it?

HJT Log:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 5:12:55 PM, on 11/26/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\RunOnce: [SpybotDeletingA176] command /c del "C:\WINDOWS\SchedLgU.Txt"
O4 - HKLM\..\RunOnce: [SpybotDeletingC2778] cmd /c del "C:\WINDOWS\SchedLgU.Txt"
O4 - HKCU\..\RunOnce: [SpybotDeletingB7294] command /c del "C:\WINDOWS\SchedLgU.Txt"
O4 - HKCU\..\RunOnce: [SpybotDeletingD3071] cmd /c del "C:\WINDOWS\SchedLgU.Txt"
O23 - Service: Application Driver Auto Removal Service (01) (appdrvrem01) - Protection Technology - C:\WINDOWS\System32\appdrvrem01.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe

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