Lord Kalthorn, sorry, but I have to disagree with !! Office XP and Office 2000 both need the original CD that they were installed from, if you have a copied CD and istalled it on your system then you need to hold on to that CD for upgrading,, if you make another copy and try to use it during installation then it won't work. (of course there is way around it too if you lose youroriginal CD)
cheers