voila le rapport :
Logfile of HijackThis v1.99.1
Scan saved at 11:27:56, on 27/06/2006
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
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:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\slserv.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\Explorer.EXE
C:\ATI-CPanel\atiptaxx.exe
C:\Program Files\Analog Devices\SoundMAX\SMTray.exe
C:\WINDOWS\System32\rundll32.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\InterVideo\Common\Bin\WinCinemaMgr.exe
C:\Program Files\Java\jre1.5.0_03\bin\jucheck.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\HIJACKTHIS VF\hijackthis vf.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://www.google.fr/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [ATIPTA] C:\ATI-CPanel\atiptaxx.exe
O4 - HKLM\..\Run: [Smapp] C:\Program Files\Analog Devices\SoundMAX\SMTray.exe
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\\NeroCheck.exe
O4 - HKLM\..\Run: [AdslTaskBar] rundll32.exe stmctrl.dll,TaskBar
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [Easy PDF Creator] C:\Program Files\Easy PDF Creator\EasyPDFCreator.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_03\bin\jusched.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Fichiers communs\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: InterVideo WinCinema Manager.lnk = C:\Program Files\InterVideo\Common\Bin\WinCinemaMgr.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O17 - HKLM\System\CCS\Services\Tcpip\..\{EB11347B-7E92-4B2B-9F91-B3CFBB837D2E}: NameServer = 212.151.137.170 212.151.136.246
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: Easy PDF Creator Printing (Service1) - Unknown owner - C:\Program Files\Easy PDF Creator\EasyPrinting.exe
O23 - Service: SmartLinkService (SLService) - - C:\WINDOWS\SYSTEM32\slserv.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe