Virus Trojan coriace... help!

Bonjour,
Mon PC est infecté de virus Trojan en tout genre depuis plus d'un mois... J'ai beau virer un tas de fichiers ou suivre les indications lues sur certains autres posts je ne m'en sors toujours pas.
Je m'en remets donc aux spécialistes en vous communiquant ci-dessous le résultat de Hijackthis... Pouvez-vous m'aider svp?

Logfile of HijackThis v1.99.1
Scan saved at 20:00:36, on 22/10/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\csrss.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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\wuapi.exe
C:\WINDOWS\lsass.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7Debug\mdm.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\CyberLink DVD Solution\PowerDVD\PDVDServ.exe
C:\Program Files\QuickTime\qttask.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\rwet\hohr.exe
C:\Program Files\Pinnacle\Shared Files\Programs\Scheduler\PCLEScheduler.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\taskmgr.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\bitdefender\BitDefender Free Edition\bdmcon.exe
C:\Program Files\bitdefender\BitDefender Free Edition\bdlite.exe
C:\Documents and Settings\Paula\Mes documents\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: BHObj Class - {00000010-6F7D-442C-93E3-4A4827C2E4C8} - C:\WINDOWS\nem220.dll (file missing)
O2 - BHO: (no name) - {00DBDAC8-4691-4797-8E6A-7C6AB89BC441} - C:\WINDOWS\System32\jkhhh.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: SABHO - {21B4ACC4-8874-4AEC-AEAC-F567A249B4D4} - c:\program files\180searchassistant\salmhook.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: MSEvents Object - {6DD0BC06-4719-4BA3-BEBC-FBAE6A448152} - C:\WINDOWS\System32\ddaby.dll
O2 - BHO: ST - {9394EDE7-C8B5-483E-8773-474BF36AF6E4} - C:\Program Files\MSN Apps\ST\01.03.0000.1005\en-xu\stmain.dll
O2 - BHO: BAHelper Class - {A3FDD654-A057-4971-9844-4ED8E67DBBB8} - C:\Program Files\SideFind\sfbho.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\program files\google\googletoolbar1.dll
O2 - BHO: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.4000.1001\fr\msntb.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.4000.1001\fr\msntb.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\program files\google\googletoolbar1.dll
O3 - Toolbar: ISTbar - {FAA356E4-D317-42a6-AB41-A3021C6E7D52} - C:\Program Files\ISTbar\istbarcm.dll (file missing)
O3 - Toolbar: ISTbar - {5F1ABCDB-A875-46c1-8345-B72A4567E486} - C:\Program Files\ISTbar\istbar.dll (file missing)
O3 - Toolbar: UCmore XP - The Search Accelerator - {44BE0690-5429-47f0-85BB-3FFD8020233E} - C:\Program Files\TheSearchAccelerator\UCMTSAIE.dll
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink DVD Solution\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [ALiUSBfix] C:\WINDOWS\System32\ALiUSB20.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [msnappau] "C:\Program Files\MSN Apps\Updater\01.02.3000.1001\fr\msnappau.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [BDMCon] C:\Program Files\Softwin\BitDefender Free Edition\\bdmcon.exe
O4 - HKLM\..\Run: [BDNewsAgent] C:\Program Files\Softwin\BitDefender Free Edition\\bdnagent.exe
O4 - HKLM\..\Run: [MS Unix Binary] msnq3insller.exe
O4 - HKLM\..\RunServices: [MS Unix Binary] msnq3insller.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: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /0
O4 - HKCU\..\RunServices: [SVC Service] svc32.pif
O4 - HKCU\..\RunServices: [SVCH Service] svch32.pif
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Pinnacle Scheduler.lnk = ?
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE
O8 - Extra context menu item: &Traduire à partir de l'anglais - res://c:\program files\google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Pages liées - res://c:\program files\google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Pages similaires - res://c:\program files\google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Recherche &Google - res://c:\program files\google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Version de la page actuelle disponible dans le cache Google - res://c:\program files\google\GoogleToolbar1.dll/cmcache.html
O9 - Extra button: SideFind - {10E42047-DEB9-4535-A118-B3F6EC39B807} - C:\Program Files\SideFind\sidefind.dll
O15 - Trusted Zone: *.media-motor.net
O15 - Trusted Zone: *.popuppers.com
O15 - Trusted Zone: http://ny.contentmatch.net (HKLM)
O15 - ProtocolDefaults: 'http' protocol is in My Computer Zone, should be Internet Zone
O16 - DPF: {00000000-0000-0000-0000-000020030000} - http://www.advnt01.com/dialer/fra_allgl.exe
O16 - DPF: {15AD6789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://static.windupdates.com/cab/ [...] ge-c11.cab
O16 - DPF: {42F2C9BA-614F-47C0-B3E3-ECFD34EED658} (Installer Class) - http://www.ysbweb.com/ist/software [...] egular.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by102fd.bay102.hotmail.msn. [...] nPUpld.cab
O16 - DPF: {7C559105-9ECF-42B8-B3F7-832E75EDD959} (Installer Class) - http://www.tbcode.com/ist/software [...] _adult.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/bina [...] b31267.cab
O16 - DPF: {8FCDF9D9-A28B-480F-8C3D-581F119A8AB8} - http://static.zangocash.com/cab/Za [...] ge-c11.cab
O16 - DPF: {9EB320CE-BE1D-4304-A081-4B4665414BEF} (MediaTicketsInstaller Control) - http://www.mt-download.com/MediaTi [...] refid=4814
O16 - DPF: {E87F6C8E-16C0-11D3-BEF7-009027438003} (Persits Software XUpload) - http://www.fnacphoto.com/ectelecha [...] Upload.ocx
O23 - Service: Automatic Update Service (Automatic Update) - Unknown owner - C:\WINDOWS\System32\wuapi.exe
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
O23 - Service: InCD Helper (InCDsrv) - Ahead Software AG - C:\Program Files\Ahead\InCD\InCDsrv.exe
O23 - Service: Local Security Authority Subsystem Service (lsass) - Unknown owner - C:\WINDOWS\lsass.exe
O23 - Service: NetDDE Server (NetDDEsrv) - Unknown owner - C:\WINDOWS\System32\netddesrv.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (NVSvc) - Unknown owner - C:\WINDOWS\System32\nvsvc32.exe (file missing)
O23 - Service: Printer Spooler (printspool) - Unknown owner - C:\WINDOWS\spooler32.exe (file missing)
O23 - Service: System Manager Service (SMSC) - Unknown owner - C:\WINDOWS\smsc.exe (file missing)
O23 - Service: SMSS - Unknown owner - C:\WINDOWS\smss.exe (file missing)
O23 - Service: Plug-n-Play SP2 Fix (sp2pnpfix) - Unknown owner - C:\WINDOWS\system32\pnpsp2fix.exe (file missing)
O23 - Service: Universal Plug and Play device driver (upnpdrv) - Unknown owner - C:\WINDOWS\System32\upnpdrv.exe (file missing)
O23 - Service: Windows Smrss Service - Unknown owner - C:\WINDOWS\svchost.exe (file missing)
O23 - Service: WindowsSysBoot - Unknown owner - C:\WINDOWS\winsys.exe (file missing)
O23 - Service: BitDefender Communicator (XCOMM) - Softwin - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe