like cookie said, you need a different player. i use DivX player on Xp and have no problems and it does load a mountain of crap onto your machine. Cant remember which site I downloaded it from but its avail from http://www.divx.com/divx/
Opp's, just read my post, what I sshould have written, was the Divx I downloaded did NOT load a load of crap on my machine (unlike some other freeware type programs).