Win XP: Internet Explorer 7 install

Hallo,

ich möchte auf meinen PC (Windows XP SP 3) Internet Explorer 7 installieren. Ich habe das Programm Herruntergeladen ich Installiere es. Dann kommt diese Fehlermeldung. (Bild)

Hier habe ich die Informationen von %windir%\ie7.log

[ie7.log]
0.219: ================================================================================
0.219: 2008/09/13 19:19:52.218 (local)
0.219: c:\419ebe6e0972d1e0fd51\update\update.exe (version 6.2.29.0)
0.234: Hotfix started with following command line: /quiet /norestart /er /log:C:\WINDOWS
0.250: IECUSTOM: Scanning for proper registry permissions...
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\ProxyStubClsid
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\ProxyStubClsid32
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\TypeLib
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}\TypeLib
0.609: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
0.828: IECUSTOM: Scanning for proper registry permissions...
1.016: IECUSTOM: Scanning for proper registry permissions...
1.250: IECUSTOM: Unwriteable key HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
1.297: IECUSTOM: Backing up registry permissions...
1.297: IECUSTOM: Finished backing up registry permissions...
1.297: IECUSTOM: Setting new registry permissions...
1.297: IECUSTOM: Unable to clear DACLs HKCR\Interface\{34A715A0-6587-11D0-924A-0020AFC7AC4D}
1.297: IECUSTOM: Finished setting new registry permissions...
1.297: IECUSTOM: An error occured verifying registry permissions. ERROR: 0x80070534
1.297: DoInstallation: CustomizeCall Failed: 0x3f5
1.297: IECUSTOM: Restoring registry permissions...
1.313: IECUSTOM: Finished restoring registry permissions...
1.313: Der Schlüssel der Konfigurationsregistrierung konnte nicht geschrieben werden.
1.313: Die Installation des Internet Explorer 7 wurde nicht abgeschlossen.
1.313: Update.exe extended error code = 0x3f5



Wenn mir einer Helfen könnte wäre ich sehr dankbar.