Tut video incorrect playback

I had downloaded the adrianna video, it worked fine but after a new installation it playbacks in a strange way at fullscreen mode in Windows mediaplayer so that some strange pattern (violett collors) appears as wide as the medialists wideness an some collums more than that wide on the right side. What could be wrong?:confused:
Working on XP and approximatly 5 years old ATI card.
More info needed?

As for all video playback problems, i command, err, i mean recommend you to give VLC a try. It plays basically everything out there wihout having to install any codec packs.