Anche io ho questo problema.Ho fatto tutta la procedura per eliminarlo. Questo è il mio log.

Logfile of HijackThis v1.99.1
Scan saved at 19.46.37, on 17/05/2006
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\ewido anti-malware\ewidoctrl.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\Hcontrol.exe
C:\WINDOWS\System32\khooker.exe
C:\WINDOWS\System32\pctspk.exe
C:\Programmi\Java\jre1.5.0_05\bin\jusched.exe
C:\Programmi\File comuni\PCSuite\DataLayer\DataLayer.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\Microsoft ActiveSync\WCESCOMM.EXE
C:\WINDOWS\ATKOSD.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Programmi\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar2.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar2.dll
O4 - HKLM\..\Run: [Hcontrol] C:\WINDOWS\Hcontrol.exe
O4 - HKLM\..\Run: [SiS KHooker] C:\WINDOWS\System32\khooker.exe
O4 - HKLM\..\Run: [SiSUSBRG] C:\WINDOWS\sisUSBrg.exe
O4 - HKLM\..\Run: [PCTVOICE] pctspk.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\jre1.5.0_05\bin\jusched.exe
O4 - HKLM\..\Run: [DataLayer] C:\Programmi\File comuni\PCSuite\DataLayer\DataLayer.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Programmi\Microsoft ActiveSync\WCESCOMM.EXE"
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000