Testing in a new User will quickly tell you if the problem is system
wide or if it’s your User’s folder that contains the problem.
Go to System Preferences --> Create a New User in Accounts. Switch to
the New User by logging out/in or use Fast User Switching. Does
Entourage launch?
If yes, then it's a problem in your User's folder.
<http://www.entourage.mvps.org/troubleshoot/test_user.html>
If no, then you need to re-install Office and run the Apple combo updater.
Mac OS X 10.5.8 Combo Update (For both PowerPC- and Intel-based Macs )
<http://support.apple.com/downloads/Mac_OS_X_10_5_8_Combo_Update>
Use "Remove Office"
<http://www.entourage.mvps.org/install/remove_office.html>
Steps to update Office after installing from DVD
<http://www.entourage.mvps.org/install/update_steps.html>
--
Diane Ross, Microsoft Mac MVP
Entourage Help Page <http://www.entourage.mvps.org/>
Entourage Help Blog <http://blog.entourage.mvps.org/>
Follow us on twitter <https://twitter.com/entouragehelp>