You have a security problem

Bonjour,j'ai une icône dans ma barre d'outil qui s'affiche et qui stipule "you have a security problem", je viens d'insatller Hijack" , et l'analyse a donné ceci:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11:36:25, on 24/09/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
Boot mode: Normal

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\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\bureau\ConvEuro.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\Program Files\Inventel\Gateway\wlancfg.exe
C:\Program Files\Java\jre1.6.0_07\bin\jusched.exe
C:\PROGRA~1\Ahead\NEROPH~2\data\Xtras\mssysmgr.exe
C:\Program Files\Fichiers communs\Ahead\lib\NMBgMonitor.exe
C:\Program Files\LaCie\Backup Software\LaCieBackup.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATICCE.EXE
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\a.exe
C:\Program Files\Nikon\PictureProject\NkbMonitor.exe
C:\Program Files\OpenOffice.org 2.2\program\soffice.exe
C:\Program Files\OpenOffice.org 2.2\program\soffice.BIN
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\e.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\Administrateur\Bureau\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer,CustomizeSearch = http://www.sharempeg.com/find/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://hptpgoogle.com/search/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.search4top.net/040C/ie.asp
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: as Class - {95B187DB-43C8-4AC7-AF7F-C93B79D21F1A} - C:\WINDOWS\system32\MSCTX32.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: e-Carte Bleue Browser Helper Object - {2E03C0FD-4C48-43A7-9A54-00240C70FF16} - C:\WINDOWS\system32\BhoECart.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: XML module - {500BCA15-57A7-4eaf-8143-8C619470B13D} - C:\WINDOWS\system32\msxml71.dll
O2 - BHO: (no name) - {6D8D3828-9463-68F3-8722-12550BDD2D18} - C:\WINDOWS\System32\pyrhexdh.dll (file missing)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O2 - BHO: pp Class - {89286D74-1E06-4AE0-8AEE-4D4363D5D814} - C:\WINDOWS\system32\MSCTX32.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime -Delay
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [ConvEuro MA] C:\Program Files\bureau\ConvEuro.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [Gestionnaire de liaison sans fil] "C:\Program Files\Inventel\Gateway\wlancfg.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_07\bin\jusched.exe"
O4 - HKCU\..\Run: [PhotoShow Deluxe Media Manager] C:\PROGRA~1\Ahead\NEROPH~2\data\Xtras\mssysmgr.exe
O4 - HKCU\..\Run: [Instant Access] rundll32.exe EGCOMLIB_1033.dll,InstantAccess
O4 - HKCU\..\Run: [Hmau] C:\Documents and Settings\Administrateur\Application Data\mheo.exe
O4 - HKCU\..\Run: [EPSON Stylus D68 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAAE.EXE /P23 "EPSON Stylus D68 Series" /M "Stylus D68" /EF "HKCU"
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Program Files\Fichiers communs\Ahead\lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [LaCie Backup] C:\Program Files\LaCie\Backup Software\\LaCieBackup.exe /background
O4 - HKCU\..\Run: [EPSON Stylus D120 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATICCE.EXE /FU "C:\WINDOWS\TEMP\E_S351.tmp" /EF "HKCU"
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [Somefox] C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\a.exe
O4 - Startup: OpenOffice.org 2.2.lnk = C:\Program Files\OpenOffice.org 2.2\program\quickstart.exe
O4 - Global Startup: NkbMonitor.exe.lnk = C:\Program Files\Nikon\PictureProject\NkbMonitor.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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: {093F9CF8-0DE1-491C-95D5-5EC257BD4CA3} - https://www.afternic.com/domains/downloadv3.com
O16 - DPF: {95B187DB-43C8-4AC7-AF7F-C93B79D21F1A} (as Class) - http://www.deepmusic.info/websearch/MSCTX32.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe