Si ça peut vous aider:

Logfile of HijackThis v1.99.0
Scan saved at 02:08:54, on 03/01/2005
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v5.00 SP4 (5.00.2920.0000)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\nvsvc32.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\Explorer.EXE
C:\WINNT\SOUNDMAN.EXE
C:\WINNT\system32\ntsmod.exe
C:\Program Files\Avant Browser\avant.exe
C:\Program Files\ABC\abc.exe
C:\Documents and Settings\Administrator\Desktop\hijackthis\HijackThis.exe

R3 - Default URLSearchHook is missing
O2 - BHO: Media Player support DLL - {2DC9D850-144D-11E1-B3C9-10805E499D95} - C:\WINNT\system32\mplay32.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O4 - HKLM\..\Run: [MSIdll] winmp.exe
O4 - HKLM\..\Run: [wzservice] hess.exe
O4 - HKLM\..\Run: [NTSF MICROSOFT SYSTEM] ntsf.exe
O4 - HKLM\..\Run: [Generic Host Process System] scvhost32.exe
O4 - HKLM\..\Run: [Microsoft Update] wupdate.exe
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINNT\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINNT\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [KAVPersonal50] C:\Program Files\Kaspersky Anti-Virus Personal\kav.exe /minimize
O4 - HKLM\..\Run: [TrojanScanner] C:\Program Files\Trojan Remover\Trjscan.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Program Files\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINNT\system32\NeroCheck.exe
O4 - HKLM\..\Run: [NeroCheck] C:\WINNT\system32\NeroCheck.exe
O4 - HKLM\..\Run: [ntsmod] C:\WINNT\system32\ntsmod.exe
O4 - HKLM\..\RunServices: [MSIdll] winmp.exe
O4 - HKLM\..\RunServices: [NTSF MICROSOFT SYSTEM] ntsf.exe
O4 - HKLM\..\RunServices: [Generic Host Process System] scvhost32.exe
O4 - HKLM\..\RunServices: [Microsoft Update] wupdate.exe
O4 - HKCU\..\Run: [NTSF MICROSOFT SYSTEM] ntsf.exe
O4 - Global Startup: Kaspersky Anti-Virus Personal.lnk = C:\Program Files\Kaspersky Anti-Virus Personal\kav.exe
O8 - Extra context menu item: Add to AD Black List - C:\Program Files\Avant Browser\AddToADBlackList.htm
O8 - Extra context menu item: Block All Images from the Same Server - C:\Program Files\Avant Browser\AddAllToADBlackList.htm
O8 - Extra context menu item: Bloquer ce serveur... - C:\Program Files\Avant Browser\AddAllToADBlackList.htm
O8 - Extra context menu item: Bloquer cette publicité... - C:\Program Files\Avant Browser\AddToADBlackList.htm
O8 - Extra context menu item: Highlight - C:\Program Files\Avant Browser\Highlight.htm
O8 - Extra context menu item: Open All Links in This Page... - C:\Program Files\Avant Browser\OpenAllLinks.htm
O8 - Extra context menu item: Ouvrir tous les liens de la page... - C:\Program Files\Avant Browser\OpenAllLinks.htm
O8 - Extra context menu item: Rechercher sur le Web... - C:\Program Files\Avant Browser\Search.htm
O8 - Extra context menu item: Search - C:\Program Files\Avant Browser\Search.htm
O8 - Extra context menu item: Surligner - C:\Program Files\Avant Browser\Highlight.htm
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061001/housecall.trendmicro.com/housecall/xscan53.cab
O23 - Service: Logical Disk Manager Administrative Service - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: kavsvc - Kaspersky Lab - C:\Program Files\Kaspersky Anti-Virus Personal\kavsvc.exe
O23 - Service: NVIDIA Display Driver Service - NVIDIA Corporation - C:\WINNT\system32\nvsvc32.exe
O23 - Service: TrueVector Internet Monitor - Zone Labs Inc. - C:\WINNT\system32\ZONELABS\vsmon.exe

Moi je l'ai et ça me bloque mes connection internet, voici mon log:


Logfile of HijackThis v1.99.1
Scan saved at 13:03:19, on 20/03/2005
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\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
C:\Program Files\Olitec\USB ADSL\CnxDslTb.exe
C:\WINDOWS\System32\iofxwcw.exe
C:\progra~1\softwin\bitdef~1\bdmcon.exe
C:\Program Files\Softwin\BitDefender8\bdoesrv.exe
C:\Program Files\Softwin\BitDefender8\bdswitch.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Softwin\BitDefender8\vsserv.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnf.exe
C:\Program Files\PROMT98\INTEGRAL\pinmenu.exe
C:\Program Files\Outlook Express\msimn.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\gre\Bureau\Daves\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: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [CnxDslTaskBar] C:\Program Files\Olitec\USB ADSL\CnxDslTb.exe
O4 - HKLM\..\Run: [zzzHPSETUP] D:\Setup.exe
O4 - HKLM\..\Run: [Windows Update] iofxwcw.exe
O4 - HKLM\..\Run: [runs] run.exe
O4 - HKLM\..\Run: [Application Layer Gateway Service] C:\WINDOWS\System32\algs.exe
O4 - HKLM\..\Run: [IExplorer6 Java Scripting] IExplore326.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [BDMCon] c:\progra~1\softwin\bitdef~1\bdmcon.exe
O4 - HKLM\..\Run: [BDOESRV] C:\Program Files\Softwin\BitDefender8\\bdoesrv.exe
O4 - HKLM\..\Run: [BDNewsAgent] c:\progra~1\softwin\bitdef~1\bdnagent.exe
O4 - HKLM\..\Run: [BDSwitchAgent] C:\Program Files\Softwin\BitDefender8\\bdswitch.exe
O4 - HKLM\..\RunServices: [Windows Update] iofxwcw.exe
O4 - HKLM\..\RunServices: [runs] run.exe
O4 - HKLM\..\RunServices: [IExplorer6 Java Scripting] IExplore326.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [IExplorer6 Java Scripting] IExplore326.exe
O4 - HKCU\..\Run: [runs] run.exe
O4 - Startup: Intégrateur PROjectMT 98.lnk = C:\Program Files\PROMT98\INTEGRAL\PINSTART.EXE
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
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: Personnaliser - C:\Program Files\PROMT98\promtie4\options.htm
O8 - Extra context menu item: Rechercher sur Internet - C:\Program Files\PROMT98\promtie4\search.htm
O8 - Extra context menu item: Traduire - C:\Program Files\PROMT98\promtie4\translat.htm
O8 - Extra context menu item: Traduire dans WebView - C:\Program Files\PROMT98\promtie4\webview.htm
O8 - Extra context menu item: Traduire la page - C:\Program Files\PROMT98\promtie4\page.htm
O9 - Extra button: Traduction - {7A2EFD41-E6B3-11D2-89E3-00E0292EE574} - C:\Program Files\PROMT98\promtie4\promtie5.htm
O9 - Extra 'Tools' menuitem: Traduire - {7A2EFD41-E6B3-11D2-89E3-00E0292EE574} - C:\Program Files\PROMT98\promtie4\promtie5.htm
O9 - Extra button: (no name) - {7A2EFD41-E6B3-11D2-89E3-00E0292EE575} - C:\Program Files\PROMT98\promtie4\options.htm
O9 - Extra 'Tools' menuitem: Personnalisez traduction - {7A2EFD41-E6B3-11D2-89E3-00E0292EE575} - C:\Program Files\PROMT98\promtie4\options.htm
O17 - HKLM\System\CCS\Services\Tcpip\..\{405287E1-26E7-450D-BC3C-B85E4B9FBC37}: NameServer = 80.118.196.40 80.118.192.110
O17 - HKLM\System\CS1\Services\Tcpip\..\{405287E1-26E7-450D-BC3C-B85E4B9FBC37}: NameServer = 80.118.196.40 80.118.192.110
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - Unknown owner - C:\Program Files\Softwin\BitDefender8\vsserv.exe
O23 - Service: BitDefender Communicator (XCOMM) - Softwin - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe

Merci.
SCARCORE