OS X 10.5.*6*? If that's accurate it could be the problem - Apple hasn't yet
posted any such update. 10.5.5 is the most current available, so if your
info is right you've somehow gotten hold of something that isn't valid.
Assuming that to be a typo, however, you're still quite a bit behind in your
Office updates. Office 2004 should be at 11.5.0, which is significant on the
Leopard OS. Unless that's a typo too you need to get Office updated, repair
disk permissions - and restarting your Mac probably wouldn't hurt either.
HTH |:>)
Bob Jones
[MVP] Office:Mac