need to play an ATI file saved as Indeo YUV9 raw

This file will open and play in MS Player 10 with XP, but not in version 11
with Vista. Gspot told me no codec was required, but this can't be the case.
I get a black screen. I assume the audio works, but since these are silent
files I only speculate on this since the time bar moves.

I suspect this should be an easy fix and did find the ATI YUV9 codecs, but
after installing them I got an error in MS Player saying it couldn't run. It
would still open and play other files. So, this codec install took a step
backwards.

I restored the system to remove what I had just done, but still have had no
luck coming up with a way to play these files.

Any ideas would be appreciated.

Thanks.

Bart