I installed the ACE MEGA CODEC and it took over my normal media player and in its place popped up some "3 2 1" Windows Classic media player which I dont want to use.
Even worse, after I uninstalled it, Windows XP now asks me if I want to open each movie file and then I have to choose the program I want to use to view it... I'm gonna try a system restore...hopefully I'll get lucky and go back to pre-Ace Codec days...
EDIT: I was sucessfull in restoriing to pre Ace days...phew. If there was some way to still use Windows Media Player 10 while having the codecs installed I would be interested in that.