If you are getting the Customer Experience dialog when you launch an Office app after SP1.
Try deleting:
~/Library/Preferences/Microsoft/Office 2008/Microsoft Office 2008 Settings.plist
/Applications/Microsoft Office 2008/Office/OfficePID.plist
Launch the app again, it will ask your name and key, it will be fixed after this.
It fixed it for me, I was getting this problem too.
from:
http://www.neowin.net/forum/index.php?showtopic=636705&st=30&p=589397984&#entry589397984