attaque de startpage sur internet explorer

bonjous à tous
depuis hier je suis envahi de message d'alerte de bitdefender :il bloque des attaques de startpage dans temporary explorer files...
merci de m'aider pour l'éliminer, ci joint le rapport

Logfile of HijackThis v1.99.1
Scan saved at 13:56:21, on 01/10/2005
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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Communicator\xcommsvr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Logitech\iTouch\iTouch.exe
C:\progra~1\softwin\bitdef~1\bdnagent.exe
C:\WINDOWS\VM_STI.EXE
C:\Program Files\Logitech\MouseWare\system\em_exec.exe
C:\Program Files\MessengerPlus! 3\MsgPlus.exe
C:\Program Files\SOFTWIN\BDHome\lmgui.exe
C:\Program Files\Sitecom\Sitecom Wireless Network PCI Adapter 54G WL-115\Installer\WINXP\WLANUTL.exe
C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe
C:\Program Files\Softwin\BitDefender8\vsserv.exe
c:\progra~1\softwin\bitdef~1\bdmcon.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\philippe et valérie\Mes documents\telechargements\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://g.msn.fr/0SEFRFR/SAOS02
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://global.acer.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://global.acer.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = localhost
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
O2 - BHO: (no name) - {243B17DE-77C7-46BF-B94B-0B5F309A0E64} - C:\Program Files\Microsoft Money\System\mnyside.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: MSNToolBandBHO - {BDBD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Apps\MSN Toolbar\01.02.4000.1001\fr\msntb.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
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: [zBrowser Launcher] C:\Program Files\Logitech\iTouch\iTouch.exe
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\system32\PSDrvCheck.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [BDMCon] C:\progra~1\softwin\bitdef~1\bdmcon.exe
O4 - HKLM\..\Run: [BDNewsAgent] "c:\progra~1\softwin\bitdef~1\bdnagent.exe"
O4 - HKLM\..\Run: [BigDogPath] C:\WINDOWS\VM_STI.EXE VIMICRO USB PC Camera
O4 - HKLM\..\Run: [Logitech Utility] Logi_MwX.Exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Program Files\MessengerPlus! 3\MsgPlus.exe"
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: Murphy Shield.lnk = ?
O4 - Global Startup: BitDefender Live!.lnk = ?
O4 - Global Startup: Sitecom WL-115 Utility.lnk = C:\Program Files\Sitecom\Sitecom Wireless Network PCI Adapter 54G WL-115\Installer\WINXP\WLANUTL.exe
O9 - Extra button: Organise-notes - {9455301C-CF6B-11D3-A266-00C04F689C50} - C:\Program Files\Fichiers communs\Microsoft Shared\Encarta Researcher\EROPROJ.DLL
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - C:\Program Files\Microsoft Money\System\mnyside.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://global.acer.com/
O16 - DPF: fdjeux - https://www.fdjeux.net/classes/fdjeux.cab
O16 - DPF: Interface Chat Voila - http://chat15.x-echo.com/version5/Applet/vchatsign.cab
O16 - DPF: teleir_cert - https://static.ir.dgi.minefi.gouv.f [...] r_cert.cab
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/bina [...] b31267.cab
O16 - DPF: {084DAC27-6FA3-4F55-9005-033F2F102F5C} (ITPPDiagIE Class) - http://images.goa.com/v3/InstallGo [...] /npwwg.cab
O16 - DPF: {10000000-1000-0000-1000-000000000000} - file://C:\Program Files\Internet Explorer\kepenkig.exe
O16 - DPF: {14B87622-7E19-4EA8-93B3-97215F77A6BC} (MessengerStatsClient Class) - http://messenger.zone.msn.com/bina [...] b31267.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?Li [...] lcid=0x409
O16 - DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} (Minesweeper Flags Class) - http://messenger.zone.msn.com/bina [...] b31267.cab
O16 - DPF: {2FC9A21E-2069-4E47-8235-36318989DB13} (PPSDKActiveXScanner.MainScreen) - http://www.pestscan.com/scanner/axscanner.cab
O16 - DPF: {31B7EB4E-8B4B-11D1-A789-00A0CC6651A8} (Cult3D ActiveX Player) - http://www.cult3d.com/download/cult.cab
O16 - DPF: {45E83043-1F6F-4D22-A5E7-0138EA171B49} (FileSharingCtrl Class) - http://appdirectory.messenger.msn. [...] ngctrl.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by106fd.bay106.hotmail.msn. [...] nPUpld.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://software-dl.real.com/1990b1 [...] 601_fr.cab
O16 - DPF: {62475759-9E84-458E-A1AB-5D2C442ADFDE} - http://a1540.g.akamai.net/7/1540/5 [...] taller.exe
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/bina [...] b31267.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {A3009861-330C-4E10-822B-39D16EC8829D} (CRAVOnline Object) - http://www.ravantivirus.com/scan/ravonline.cab
O16 - DPF: {ABB08127-7417-11D4-8566-00500448008D} (Chat Class) - http://downloads.winwise.fr/Common/npchatlax.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/ [...] loader.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (ZoneIntro Class) - http://messenger.zone.msn.com/bina [...] b31267.cab
O16 - DPF: {F00F4763-7355-4725-82F7-0DA94A256D46} (IMDownloader Class) - http://www2.incredimail.com/conten [...] loader.cab
O16 - DPF: {FD40EC41-D860-4579-8BA4-52671A45C71C} (AxHtChat Class) - http://images.goa.com/v3/InstallGo [...] axchat.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O23 - Service: Avx Init Serv (AvxIni) - Unknown owner - C:\Program Files\SOFTWIN\BDHome\avxinit.exe
O23 - Service: BitDefender Scan Server (bdss) - Unknown owner - C:\Program Files\Fichiers communs\Softwin\BitDefender Scan Server\bdss.exe" /service (file missing)
O23 - Service: BitDefender Virus Shield (VSSERV) - Unknown owner - C:\Program Files\Softwin\BitDefender8\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)