OK I seem to have solved this for myself!
I am running Windows Vista Ultimate, Office Home & Student 2007 an
Office Outlook 2007.
I discovered that the installation files for Office Outlook 2007 wer
corrupted.
I went to:-
http://support.microsoft.com/kb/290301/en-us
and downloaded the "Windows Installer CleanUp Utility" and ran it o
Microsoft Outlook.
I then did the following.
1. ReInstalled Microsoft Outlook 2007 over the top of the curren
installation
2. Restarted the computer
3. Carried out a repair on Outlook
4. Restarted the computer
5. Installed Office 2007 SP1 Successfully!
I hope that this helps everyone
Regards
Richar