In all seriousness. What web parts are on the pages you are looking
for? I seem to remember a problem I had early on in my deployment where
we had some of the office XP components installed on the server (such as
the outlook calendar) while the client computer only had office 2000
installed on it.. After removing the Web parts, the problem went away.
If that IS the problem you are having, you might try installing the web
components off of the office XP cd on the client computer and see if you
still have the problem.