I am having problems playing 3 individual avi files. When I try to play them, two of them have sound but no picture, and the other has picture but no sound.

I've:
- sent these files to other people and they worked fine for them, so they're probably not corrupt.
- tried running them with WinDVD, DivX player, and Windows Media Player.
- tried other avi files and they run fine (3 others).
- used GSpot and it says I should be able to view them no problem.
- reinstalled the divx codec 2 times
- installed the Adaptec ASPI driver ...

What am I missing here