Outlook 2007 gone

[Gilh3]

After Outlook 2000 successfully upgraded to 2007, it ran OK in Windows XP Pro. The Spambayes Addin for filtering would not activate.
Ran an Office repair from the installation disk.
In restart Outlook 2007 was gone.
Trying to add Outlook from disk shows Outlook "Not Available".
Cannot find any way to re-install or get Outlook back.

Any ideas why Outlook is shown as "Not Available" and how I can get it back?

 

[Gilh3]

With no suggestions showing up, I bit the bullet - uninstalled Office 2007 and successfully re-installed it.
SpamBayes in Outlook 2007 now even works!