Pb démarrage sur IE 6

Bonjour,
Depuis quelques jours, Internet Explorer 6 ne veut plus s'ouvrir. J'ai le message suivant :

Internet explorer a rencontré un problème et doit fermer.
Signature de l'erreur :
AppName:iexplore.exe Appver:6.0.2800.1106 ModName:flash.ocx
Modver:6.0.22.0 offset:000542fc

Voici un rapport Hijackthis, si quelqu'un peut m'aider à l'interprèter car je ne suis pas un expert dans le domaine. Je pense que j'ai peut-être choppé une " salopperie" mais laquelle ?
De plus, avant cette impossibilité de démarrage, j'avais déjà des difficultés pour ouvrir des PDF et certains liens semblaient mal marcher



'
--Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 21:57:51, on 30/12/2007
Platform: Windows 98 SE (Win9x 4.10.2222A)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Boot mode: Normal

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\PROGRAM FILES\ALWIL SOFTWARE\AVAST4\ASHSERV.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\PROGRAM FILES\ALWIL SOFTWARE\AVAST4\ASHWEBSV.EXE
C:\MOUSE\SYSTEM\EM_EXEC.EXE
C:\PROGRAM FILES\ALWIL SOFTWARE\AVAST4\ASHMAISV.EXE
C:\PROGRAM FILES\TCLOCK2\TCLOCK230FR\TCLOCK.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\WINDOWS\SYSTEM\RPCSS.EXE
C:\PROGRAM FILES\WANADOO\GESTIONNAIREINTERNET.EXE
C:\PROGRAM FILES\WANADOO\COMCOMP.EXE
C:\PROGRAM FILES\WANADOO\TOASTER.EXE
C:\PROGRAM FILES\WANADOO\INACTIVITY.EXE
C:\PROGRAM FILES\WANADOO\POLLINGMODULE.EXE
C:\WINDOWS\SYSTEM32\ALERTMODULE\ALERTMODULE.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
C:\PROGRAM FILES\WANADOO\WATCH.EXE
C:\PROGRAM FILES\MOZILLA FIREFOX\FIREFOX.EXE
C:\WINDOWS\SYSTEM\DDHELP.EXE
C:\PROGRAM FILES\INTERNET EXPLORER\DW15.EXE
C:\PROGRAM FILES\TREND MICRO\HIJACKTHIS\HIJACKTHIS.EXE

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://fr.yahoo.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://fr.rd.yahoo.com/customize/ycomp/defaults/su/*https://fr.yahoo.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Orange
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Search Class - {08C06D61-F1F3-4799-86F8-BE1A89362C85} - C:\PROGRA~1\WANADOO\SEARCH~1.DLL
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRAM FILES\YAHOO!\COMPANION\INSTALLS\CPN1\YT.DLL
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\PROGRAM FILES\YAHOO!\COMPANION\INSTALLS\CPN1\YT.DLL
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHELPER.DLL
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_14\bin\ssv.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRAM FILES\YAHOO!\COMPANION\INSTALLS\CPN1\YT.DLL
O3 - Toolbar: @msdxmLC.dll,-1@1036,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [avast! Web Scanner] C:\PROGRA~1\ALWILS~1\AVAST4\ASHWEBSV.EXE
O4 - HKLM\..\Run: [Tweak UI] RUNDLL32.EXE TWEAKUI.CPL,TweakMeUp
O4 - HKLM\..\Run: [EM_EXEC] C:\MOUSE\SYSTEM\EM_EXEC.EXE
O4 - HKLM\..\Run: [ashMaiSv] C:\PROGRA~1\ALWILS~1\AVAST4\ashmaisv.exe
O4 - HKLM\..\RunServices: [avast!] C:\Program Files\Alwil Software\Avast4\ashServ.exe
O4 - HKUS\.DEFAULT\..\RunOnce: [QRIA] (User 'Default user')
O4 - .DEFAULT Startup: TClock.lnk = C:\Program Files\tclock2\tclock230fr\tclock.exe (User 'Default user')
O4 - Startup: TClock.lnk = C:\Program Files\tclock2\tclock230fr\tclock.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\PROGRAM FILES\JAVA\JRE1.5.0_14\BIN\SSV.DLL
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\PROGRAM FILES\JAVA\JRE1.5.0_14\BIN\SSV.DLL
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra button: Orange - {1462651F-F4BA-4C76-A001-C4284D0FE16E} - https://www.orange.fr/portail (file missing) (HKCU)
O12 - Plugin for .mpg: C:\PROGRA~1\INTERN~1\PLUGINS\npqtplugin3.dll
O12 - Plugin for .mp3: C:\PROGRA~1\INTERN~1\PLUGINS\npqtplugin4.dll
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {F00F4763-7355-4725-82F7-0DA94A256D46} (IncrediMail) - http://www5l.incredimail.com/contents/setup/2007032901/downloader_nu/imloader.cab
O16 - DPF: {6E5E167B-1566-4316-B27F-0DDAB3484CF7} (Image Uploader Control) - http://www3.photoservice.com/aurigma/ImageUploader4.cab
O16 - DPF: {BB21F850-63F4-4EC9-BF9D-565BD30C9AE9} (a-squared Scanner) - http://ax.emsisoft.com/asquared.cab
O16 - DPF: {E8F628B5-259A-4734-97EE-BA914D7BE941} (Driver Agent ActiveX Control) - https://driveragent.com/files/driveragent.cab
O16 - DPF: {E87F6C8E-16C0-11D3-BEF7-009027438003} (Persits Software XUpload) - http://upload.mediamax.com/404.html
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://download.microsoft.com/download/E/5/6/E5611B10-0D6D-4117-8430-A67417AA88CD/LegitCheckControl.cab