xp dualview playback

long question short

i have an good old Dell Inspiron 4000 running
windows xp professional
with ATI Mobility M3 graphic card

on the secondary monitor (xp’s dualview), when i playback video’s like .avi’s i get no video but sound, if when the mediaplayer is dragged to play in the primary display it will soon have the video on. it applies to all the other players like mediaplayer classic and so on… but .mov’s and .rm’s are fine.

i like to play video’s in the secondary monitor, so if anyone have any clues about this please help, thanks.

Cyril