video problems with Window Media Player

>-----Original Message-----
>I have avi. files that I can run on Windows Media Player
>on many different computers in my company, but on my
>computer I get no image whatsoever. I checked all the
>files types supported and video is supposedly active.
>I can hear the sound of some of those files but I have no
>image. That's only on my computer. What is wrong ?
>If I try Real player I have the same problem.
>
>Thanks
>
>
>Blanche
>Try QUICKTIME
>
>.
>