Pourquoi svp je ne peut pas me conecter a internet

Bonjour,j'arrive pas a aller sur des sites internet "impossible afficherla page", que ce soit IE,Firefox, Opera.
Pourtant je suis bien conecté au réseau ???
J'ai sur mon ordi installé BitDefender, Kerio,Ad-aware,et Spybotet j'ai fais des scans et ils me trouvent rien...
Donc j'ai vu sur un site qu'avec HijackThis il fallait que je fasse un scan ... voila c'est fait .
Voila le résultat obtenu,si vous pouvez m'aider (merci d'avance) :

Logfile of HijackThis v1.99.1
Scan saved at 18:42:15, on 25/11/2006
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Stardock\SDMCP.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Update Service\livesrv.exe
C:\Program Files\Softwin\BitDefender10\vsserv.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\Fichiers communs\stardock\TrayServer.exe
D:\Program files (suite)\ZoneAlarm\zlclient.exe
C:\Program Files\QuickTime\qttask.exe
D:\Program files (suite)\StardockDesktop\CursorXP\CursorXP.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Lavasoft\Ad-Aware SE Professional\Ad-Watch.exe
C:\Program Files\WinOSX\Administrateur\ObjectDock\ObjectDock.exe
C:\Program Files\iTunes\iTunes.exe
C:\Program Files\Lavasoft\Ad-Aware SE Professional\Ad-Aware.exe
D:\Telechargés\hijackthis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.clubic.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {192c5b4a-3efd-40c7-9f99-c472deb8efc0} - (no file)
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - D:\Program files (suite)\Spybot - Search & Destroy\SDHelper.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O3 - Toolbar: (no name) - {96ebbe6a-2864-4345-b32b-26ee9be524b5} - (no file)
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [1A:Stardock TrayMonitor] "C:\Program Files\Fichiers communs\stardock\TrayServer.exe"
O4 - HKLM\..\Run: [Zone Labs Client] "D:\Program files (suite)\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [assistse] "C:\PROGRA~1\3721\assistse.exe"
O4 - HKLM\..\Run: [kav] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [HSIMargin] C:\Program Files\WinOSX\Administrateur\HSI\HSI.exe "C:\Program Files\WinOSX\Administrateur\HSI\Margin.hss"
O4 - HKCU\..\Run: [CursorXP] D:\Program files (suite)\StardockDesktop\CursorXP\CursorXP.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [AWMON] "C:\Program Files\Lavasoft\Ad-Aware SE Professional\Ad-Watch.exe"
O4 - HKCU\..\Run: [ObjectDock] C:\Program Files\WinOSX\Administrateur\ObjectDock\ObjectDock.exe
O4 - HKCU\..\Run: [Hide IP Platinum] C:\Program Files\Hide IP Platinum\hideippla.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://D:\Program files (suite)\Office2003\OFFICE11\EXCEL.EXE/3000
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSN Messenger\msgrapp.dll" (file missing)
O20 - Winlogon Notify: klogon - C:\WINDOWS\system32\klogon.dll
O20 - Winlogon Notify: MCPClient - C:\Program Files\Fichiers communs\Stardock\mcpstub.dll
O20 - Winlogon Notify: WB - D:\Program files (suite)\StardockDesktop\WindowBlinds\fastload.dll
O20 - Winlogon Notify: WBSrv - D:\Program files (suite)\WindowBlinds(bon)\wbsrv.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Fichiers communs\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: Kaspersky Anti-Virus 6.0 (AVP) - Unknown owner - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe" -r (file missing)
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe" /service (file missing)
O23 - Service: DirectX Service (DirectService) - Unknown owner - c:\windows\system32\directx.exe (file missing)
O23 - Service: Intel(R) PROSet/Wireless Event Log (EvtEng) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Unknown owner - C:\Program Files\iPod\bin\iPodService.exe (file missing)
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Update Service\livesrv.exe" /service (file missing)
O23 - Service: Intel(R) PROSet/Wireless Registry Service (RegSrvc) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - Unknown owner - C:\Program Files\Softwin\BitDefender10\vsserv.exe" /service (file missing)
O23 - Service: BitDefender Communicator (XCOMM) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe" /service (file missing)