Virus et spyware ?

Bonjour,
depuis quelques temps mon ordi rame lors du lancement de windows et d'application comme firefox par exemple.
je voudrais savoir si il ya des virus ou spyware ou tout autre chose d'anormal sur mon ordi.

merci d'avance

voila un rapport hijackthis>
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:36:45, on 29/02/2008
Platform: Windows Vista (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16609)
Boot mode: Normal

Running processes:
G:\Windows\System32\smss.exe
G:\Windows\system32\csrss.exe
G:\Windows\system32\wininit.exe
G:\Windows\system32\csrss.exe
G:\Windows\system32\services.exe
G:\Windows\system32\lsass.exe
G:\Windows\system32\lsm.exe
G:\Windows\system32\winlogon.exe
G:\Windows\system32\svchost.exe
G:\Windows\system32\svchost.exe
G:\Windows\System32\svchost.exe
G:\Windows\system32\Ati2evxx.exe
G:\Windows\System32\svchost.exe
G:\Windows\System32\svchost.exe
G:\Windows\system32\svchost.exe
G:\Windows\system32\SLsvc.exe
G:\Windows\system32\svchost.exe
G:\Windows\system32\Ati2evxx.exe
G:\Windows\system32\svchost.exe
G:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
G:\Program Files\Alwil Software\Avast4\ashServ.exe
G:\Windows\system32\Dwm.exe
G:\Windows\Explorer.EXE
G:\Windows\system32\brsvc01a.exe
G:\Windows\system32\brss01a.exe
G:\Windows\System32\spoolsv.exe
G:\Windows\system32\taskeng.exe
G:\Windows\system32\svchost.exe
G:\Program Files\Windows Defender\MSASCui.exe
G:\Program Files\Alwil Software\Avast4\ashDisp.exe
G:\Windows\ZSSnp211.exe
G:\Windows\Domino.exe
G:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
D:\Program Files\Spyware Doctor\SDTrayApp.exe
D:\Program Files\Nokia\Nokia PC Suite 6\PcSync2.exe
G:\Program Files\Windows Media Player\wmpnscfg.exe
G:\Users\Bonbon d'Amour\AppData\Local\fouwjiumia.exe
D:\Program Files\Nokia\Nokia PC Suite 6\PCSuite.exe
g:\Program Files\ATI Technologies\ATI.ACE\Core-Static\MOM.EXE
G:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
G:\Windows\system32\svchost.exe
G:\Windows\system32\svchost.exe
d:\Program Files\Spyware Doctor\svcntaux.exe
d:\Program Files\Spyware Doctor\swdsvc.exe
G:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CCC.exe
G:\Windows\system32\svchost.exe
G:\Windows\System32\svchost.exe
G:\Windows\system32\SearchIndexer.exe
G:\Windows\system32\WUDFHost.exe
G:\Program Files\Windows Live\Messenger\msnmsgr.exe
G:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
G:\Program Files\Alwil Software\Avast4\ashWebSv.exe
G:\Program Files\Windows Media Player\wmpnetwk.exe
G:\Windows\system32\taskeng.exe
G:\Program Files\PC Connectivity Solution\ServiceLayer.exe
G:\Program Files\PC Connectivity Solution\Transports\NclUSBSrv.exe
G:\Program Files\PC Connectivity Solution\Transports\NclIrSrv.exe
G:\Program Files\PC Connectivity Solution\Transports\NclRSSrv.exe
G:\Program Files\Common Files\Nokia\MPAPI\MPAPI3s.exe
G:\Program Files\Windows Live\Messenger\usnsvc.exe
G:\Windows\system32\wbem\wmiprvse.exe
G:\Windows\system32\wbem\unsecapp.exe
G:\Windows\ehome\ehsched.exe
G:\Windows\ehome\ehRecvr.exe
G:\Program Files\Mozilla Firefox 3 Beta 2\firefox.exe
G:\Windows\system32\Taskmgr.exe
g:\program files\windows defender\MpCmdRun.exe
G:\Windows\system32\wbem\wmiprvse.exe
I:\Gui\logiciel et jeu\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = https://www.bing.com/?toHttps=1&redig=5FC791212101479BAFBE1A679848B1AF
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.msn.com/fr-fr
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
O1 - Hosts: ::1 localhost
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - G:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - G:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [avast!] G:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [ZSSnp211] G:\Windows\ZSSnp211.exe
O4 - HKLM\..\Run: [Domino] G:\Windows\Domino.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "G:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [SDTray] "d:\Program Files\Spyware Doctor\SDTrayApp.exe"
O4 - HKCU\..\Run: [StartCCC] g:\Program Files\ATI Technologies\ATI.ACE\Core-Static\CLIStart.exe
O4 - HKCU\..\Run: [Tunebite] D:\Program Files\RapidSolution\Tunebite\Tunebite.exe -tray
O4 - HKCU\..\Run: [Nokia.PCSync] "D:\Program Files\Nokia\Nokia PC Suite 6\PcSync2.exe" /NoDialog
O4 - HKCU\..\Run: [WMPNSCFG] G:\Program Files\Windows Media Player\WMPNSCFG.exe
O4 - HKCU\..\Run: [fouwjiumia] g:\users\bonbon d'amour\appdata\local\fouwjiumia.exe fouwjiumia
O4 - HKCU\..\Run: [PC Suite Tray] "D:\Program Files\Nokia\Nokia PC Suite 6\PCSuite.exe" -onlytray
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [msnmsgr] "G:\Program Files\MSN Messenger\msnmsgr.exe" /background (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [msnmsgr] "G:\Program Files\MSN Messenger\msnmsgr.exe" /background (User 'Default user')
O4 - Global Startup: E_SPSU01.lnk = G:\Windows\System32\spool\drivers\w32x86\3\E_SPSU01.EXE
O8 - Extra context menu item: &Search - http://edits.mywebsearch.com/toolbaredits/menusearch.jhtml?p=ZNfox000
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - G:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - G:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Run IMVU - {d9288080-1baa-4bc4-9cf8-a92d743db949} - G:\Users\Bonbon d'Amour\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\IMVU\Run IMVU.lnk (file missing)
O22 - SharedTaskScheduler: Windows DreamScene - {E31004D1-A431-41B8-826F-E902F9D95C81} - G:\Windows\System32\DreamScene.dll
O22 - SharedTaskScheduler: Deskscapes - {EC654325-1273-C2A9-2B7C-45D29BCE68FB} - G:\PROGRA~1\Stardock\OBJECT~1\DESKSC~1\deskscapes.dll
O22 - SharedTaskScheduler: Stardock Vista ControlPanel Extension - {EC654325-1273-C2A9-2B7C-45D29BCE68FD} - G:\PROGRA~1\Stardock\OBJECT~1\DESKSC~1\DesktopControlPanel.dll
O22 - SharedTaskScheduler: StardockDreamController - {EC654325-1273-C2A9-2B7C-45D29BCE68FF} - G:\PROGRA~1\Stardock\OBJECT~1\DESKSC~1\DreamControl.dll
O23 - Service: Apple Mobile Device - Apple, Inc. - G:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - G:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati External Event Utility - ATI Technologies Inc. - G:\Windows\system32\Ati2evxx.exe
O23 - Service: avast! Antivirus - ALWIL Software - G:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - G:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - G:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: BrSplService (Brother XP spl Service) - brother Industries Ltd - G:\Windows\system32\brsvc01a.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - G:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - G:\Program Files\iPod\bin\iPodService.exe
O23 - Service: NBService - Nero AG - G:\Program Files\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - G:\Program Files\Common Files\Ahead\Lib\NMIndexingService.exe
O23 - Service: PC Tools Auxiliary Service (sdAuxService) - PC Tools - d:\Program Files\Spyware Doctor\svcntaux.exe
O23 - Service: PC Tools Security Service (sdCoreService) - PC Tools - d:\Program Files\Spyware Doctor\swdsvc.exe
O23 - Service: ServiceLayer - Nokia. - G:\Program Files\PC Connectivity Solution\ServiceLayer.exe