erreur installation ie7

bonjour
je possede xp familiale sp2 et j'ai voulu installer sp3 par windows update,mais message erreur et refus d'installation
rapport ci joind merci d'avance

.468: 2008/11/16 14:45:35.031 (local)
0.468: c:\2295487c867f21fae0ae7d\update\update.exe (version 6.2.29.0)
0.500: Hotfix started with following command line: /quiet /norestart /er /log:C:\WINDOWS
0.500: IECUSTOM: Scanning for proper registry permissions...
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\ProxyStubClsid
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\ProxyStubClsid32
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\TypeLib
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\TypeLib
1.265: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
2.031: IECUSTOM: Scanning for proper registry permissions...
2.281: IECUSTOM: Scanning for proper registry permissions...
2.671: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
2.812: IECUSTOM: Backing up registry permissions...
2.843: IECUSTOM: Finished backing up registry permissions...
2.843: IECUSTOM: Setting new registry permissions...
2.843: IECUSTOM: Unable to clear DACLs HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
2.843: IECUSTOM: Finished setting new registry permissions...
2.843: IECUSTOM: An error occured verifying registry permissions. ERROR: 0x80070534
2.843: DoInstallation: CustomizeCall Failed: 0x3f5
2.843: IECUSTOM: Restoring registry permissions...
2.875: IECUSTOM: Finished restoring registry permissions...
2.890: Impossible d'écrire la clé du Registre de configuration.
2.890: L'installation du Internet Explorer 7 ne s'est pas terminée.
2.890: Update.exe extended error code = 0x3f5

bonsoir
j"ai résolu le probléme ,lu le tuto de moloch
merci