Analyse hijakthis

Bonjour,
Quelqu'un pourrait-il me dire, au vu de cette log hijakthis, s'il y a des lignes à fixer? mon ordinateur marche bizarrement (écran noir et blocage par moments), j'ai l'impression qu'il a attrapé des 'cochonneries' .
Merci à celui ou celle qui pourra m'aider.
Genevieve

Logfile of HijackThis v1.99.1
Scan saved at 21:32:19, on 28/03/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\Program Files\Avast4\aswUpdSv.exe
C:\Program Files\Avast4\ashServ.exe
C:\PROGRA~1\Avast4\ashDisp.exe
C:\PROGRA~1\Wanadoo\CnxMon.exe
C:\PROGRA~1\MESSAG~1\Demon.exe
C:\Program Files\Alcatel\SpeedTouch USB\Dragdiag.exe
C:\Program Files\Symantec\Norton Ghost 2003\GhostStartService.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\PROGRA~1\Wanadoo\TaskbarIcon.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\SuperCopier\SuperCopier.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Avast4\ashMaiSv.exe
C:\Program Files\Avast4\ashWebSv.exe
C:\Program Files\Wanadoo\EspaceWanadoo.exe
C:\Program Files\Wanadoo\ComComp.exe
C:\Program Files\Wanadoo\Watch.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Outlook Express\msimn.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Genevieve\Local Settings\Temporary Internet Files\Content.IE5\WW3YQTBR\HijackThis[1].exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://www.orange.fr/portail
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.orange.fr/portail
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Wanadoo
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [WooCnxMon] C:\PROGRA~1\Wanadoo\CnxMon.exe
O4 - HKLM\..\Run: [Demon] C:\PROGRA~1\MESSAG~1\Demon.exe
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Alcatel\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\TaskbarIcon.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\HP\HP Software Update\HPWuSchd2.exe"
O4 - HKCU\..\Run: [SuperCopier.exe] C:\Program Files\SuperCopier\SuperCopier.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - Startup: ubisoft register.lnk = C:\Program Files\Ubi Soft\Register\schedule.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.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
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
O9 - Extra button: Wanadoo - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - https://www.orange.fr/portail (file missing) (HKCU)
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site....
O17 - HKLM\System\CCS\Services\Tcpip\..\{31EACDF7-B7CF-4603-91C0-A64A7403CE8B}: NameServer = 80.10.246.1 80.10.246.132
O17 - HKLM\System\CS1\Services\Tcpip\..\{31EACDF7-B7CF-4603-91C0-A64A7403CE8B}: NameServer = 80.10.246.1 80.10.246.132
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\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - Unknown owner - C:\Program Files\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: GhostStartService - Symantec Corporation - C:\Program Files\Symantec\Norton Ghost 2003\GhostStartService.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe