Ouverture intempestives de pages web

Bonjour,

Mon ordi deconne un max, ouverture de pages intempestives du genre "exoclic" et plus d'icone avast, je crois qu'il est pété de virus ci joint rapport hijack

Logfile of HijackThis v1.99.1
Scan saved at 19:19:07, on 10/10/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Unable to get Internet Explorer version!

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\Internet Explorer\IEXPLORE.EXE
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\vsnpstd2.exe
C:\Program Files\Portrait Displays\HP My Display\DTHtml.exe
C:\Program Files\IVT Corporation\BlueSoleil\BtTray.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\Fichiers communs\Portrait Displays\Shared\HookManager.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\IVT Corporation\BlueSoleil\BlueSoleilCS.exe
C:\Program Files\IVT Corporation\BlueSoleil\BsMobileCS.exe
C:\Program Files\Fichiers communs\Portrait Displays\Shared\DTSRVC.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\IVT Corporation\BlueSoleil\BsHelpCS.exe
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
F:\HIJACKTHIS\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.neuf.fr
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.msn.com/fr-fr/?ocid=iehp
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [SNPSTD2] C:\WINDOWS\vsnpstd2.exe
O4 - HKLM\..\Run: [DT HPW] C:\Program Files\Portrait Displays\HP My Display\DTHtml.exe -startup_folder
O4 - HKLM\..\Run: [BtTray] "C:\Program Files\IVT Corporation\BlueSoleil\BtTray.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O8 - Extra context menu item: Envoyer via Bluetooth - C:\Program Files\IVT Corporation\BlueSoleil\TransSend\IE\tsinfo.htm
O8 - Extra context menu item: Envoyer via message(&M)... - C:\Program Files\IVT Corporation\BlueSoleil\TransSend\IE\tssms.htm
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search && Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/...
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/...
O17 - HKLM\System\CCS\Services\Tcpip\..\{B8B5A4DE-98A5-4E04-8205-A2708ABD5B5D}: NameServer = 86.64.145.144 84.103.237.144
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\WINDOWS\system32\skype4com.dll
O20 - AppInit_DLLs: cfaqfw.dll
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 - 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: BlueSoleilCS - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\BlueSoleilCS.exe
O23 - Service: BsHelpCS - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\BsHelpCS.exe
O23 - Service: BsMobileCS - Unknown owner - C:\Program Files\IVT Corporation\BlueSoleil\BsMobileCS.exe
O23 - Service: Portrait Displays Display Tune Service (DTSRVC) - Unknown owner - C:\Program Files\Fichiers communs\Portrait Displays\Shared\DTSRVC.exe
O23 - Service: Windows User Mode Driver Framework (UMWdf) - Unknown owner - C:\WINDOWS\System32\wdfmgr.exe (file missing)