my newer one isn't working anymore so i had to install my old tnt2

to watch several funmovies, trailers i use videolan player cause he supports most codecs. sometimes i use media player.
info: fresh installed system (win2k).
almost always my pc hangs when i'll try to open a movie file. whats the problem? i use one of the newest detonator.
do i have to say goodbye to that card?