Help virus et spytrooper

Je suis nulle en informatique.
Pouvez vous analyser le rapport ci dessous et me dire que faire.Chaque fois que j'allume mon ordi des virus sont détectés (genre systèeme32/LD2536)je fais "delete"il en vient tjs d'autres .
Et je n'arrive pas à ouvrir les messages MSN.La page s'ouvresur:Tlhe page cannot be displayed et plus bas install spy trooper.
Explications pas très claires p-ê mais je suis archi nulle et ne connais pas le vocabulaire informatique
Merci de bien vouloir m'aider

Logfile of HijackThis v1.99.1
Scan saved at 17:40:07, on 06/11/2005
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:\Program Files\Ahead\InCD\InCDsrv.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRAM FILES\AVPERSONAL\AVGUARD.EXE
C:\Program Files\AVPersonal\AVWUPSRV.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\mssearchnet.exe
C:\WINDOWS\system32\nvctrl.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\Winamp\Winampa.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\D-Tools\daemon.exe
C:\Program Files\Java\j2re1.4.2_05\bin\jusched.exe
C:\Program Files\Saitek\Software\Profiler.exe
C:\Program Files\Saitek\Software\SaiSmart.exe
C:\Program Files\AVPersonal\AVGNT.EXE
C:\WINDOWS\system32\RUNDLL32.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Nikon\NkView6\NkvMon.exe
C:\Program Files\MSI\PC Alert III\alert.exe
C:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\WinRAR\WinRAR.exe
C:\DOCUME~1\Josy\LOCALS~1\Temp\Rar$EX00.032\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.fr/0SEFRFR/SAOS02
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://runonce.msn.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://home.free.fr/
O2 - BHO: HomepageBHO - {3bf1f86f-b1a8-489b-8d8b-43781d51411f} - C:\WINDOWS\system32\hp369E.tmp
O3 - Toolbar: &Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\COMPAN~1\Installs\cpn\ycomp5_3_18_0.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar2.dll
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.4000.1001\fr\msntb.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [WinampAgent] "C:\Program Files\Winamp\Winampa.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [DAEMON Tools-1033] "C:\Program Files\D-Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_05\bin\jusched.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Profiler] C:\Program Files\Saitek\Software\Profiler.exe
O4 - HKLM\..\Run: [SaiSmart] C:\Program Files\Saitek\Software\SaiSmart.exe
O4 - HKLM\..\Run: [AVGCtrl] "C:\Program Files\AVPersonal\AVGNT.EXE" /min
O4 - HKLM\..\Run: [intell32.exe] C:\WINDOWS\system32\intell32.exe
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\RunServices: [RunAlert] C:\Program Files\MSI\PC Alert III\AService.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Yahoo! Pager] C:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: NkvMon.exe.lnk = C:\Program Files\Nikon\NkView6\NkvMon.exe
O4 - Global Startup: PC Alert III.lnk = C:\Program Files\MSI\PC Alert III\alert.exe
O4 - Global Startup: Protection auto Norton AntiVirus.lnk = C:\Program Files\Navnt\navapw32.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_05\bin\npjpi142_05.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_05\bin\npjpi142_05.dll
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmes.dll
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmes.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
O14 - IERESET.INF: START_PAGE_URL=http://home.free.fr/
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://chat.msn.com/bin/msnchat45.cab
O23 - Service: AntiVir Service (AntiVirService) - H+BEDV Datentechnik GmbH - C:\PROGRAM FILES\AVPERSONAL\AVGUARD.EXE
O23 - Service: AntiVir Update (AVWUpSrv) - H+BEDV Datentechnik GmbH, Germany - C:\Program Files\AVPersonal\AVWUPSRV.EXE
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: InCD Helper (read only) (InCDsrvR) - Ahead Software AG - C:\Program Files\Ahead\InCD\InCDsrv.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe

amicalement