Impossible de reinstaller mon antivirus

bonjour!!
je suis dans la grosse galère...en effet tous mes antivirus antispy antiadware etc... ont été tiltés quand je veux les reinstaller y'a pas moyen .
je joins le compte rendu hisjackthis
merci d'avance a celui qui acceptera de s'y pencher pour éclairer mes sombres lanternes
Logfile of HijackThis v1.99.1
Scan saved at 12:58:00, on 21/02/2007
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\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\Program Files\Java\jre1.5.0_09\bin\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\QuickTime\qttask.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\Shareaza\Shareaza.exe
C:\WINDOWS\system32\rundll32.exe
C:\Program Files\BitTorrent\bittorrent.exe
C:\Program Files\Inventel\Gateway\WLANCFG.EXE
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Hijackthis Version Française\hijackthis vf.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = https://www.bing.com/?cc=fr&toHttps=1&redig=55729C844D6A45819CAD368B3E178C9F
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.orange.fr/portail
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_09\bin\ssv.dll
O2 - BHO: Multi Media Toolbar - {b5146c40-189a-4311-bda9-fbae3e023187} - C:\Program Files\Multi_Media\tbMult.dll
O3 - Toolbar: Multi Media Toolbar - {b5146c40-189a-4311-bda9-fbae3e023187} - C:\Program Files\Multi_Media\tbMult.dll
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [KASP] "C:\Program Files\Kaspersky Lab\Kaspersky Security Suite\Kaspersky Anti-Spam Personal\OESpamTest.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_09\bin\jusched.exe"
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [KAVPersonal50] "C:\Program Files\Kaspersky Lab\Kaspersky Security Suite\Kaspersky Anti-Virus Personal\kav.exe" /minimize
O4 - HKLM\..\Run: [OESpamTest] C:\PROGRA~1\KASPER~1\KASPER~1\KASPER~2\OESpamTest.ExE
O4 - HKCU\..\Run: [WOOKIT] C:\Program Files\Wanadoo\Shell.exe appLaunchClientZone.shl|PARAM= cnx
O4 - HKCU\..\Run: [Shareaza] "C:\Program Files\Shareaza\Shareaza.exe" -tray
O4 - HKCU\..\Run: [BitTorrent] "C:\Program Files\BitTorrent\bittorrent.exe" --force_start_minimized
O4 - HKCU\..\Run: [eMuleAutoStart] C:\Program Files\eMule\emule.exe -AutoStart
O4 - Global Startup: Kaspersky Anti-Hacker.lnk = ?
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: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - https://antivirus-france.com/erreur-404/
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O16 - DPF: {867E13F2-7F31-44FB-AC97-CD38E0DC46EF} (HardwareDetection Control) - https://www.touslesdrivers.com/index.php?v_page=29
O16 - DPF: {86EEF11E-FF16-48CE-B1A2-474B663041A9} - http://18807.kit.carpediem.fr/ParisVoyeur-acrowarez.exe
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: AVG Anti-Spyware Guard - Unknown owner - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: kavsvc - Unknown owner - C:\Program Files\Kaspersky Lab\Kaspersky Security Suite\Kaspersky Anti-Virus Personal\kavsvc.exe (file missing)