Movie's will not play

[easbadboy]

I have downloaded 3 files of the same movie from 3 different people and it still will not play. I have tried to open it with the Vlc media player,Divx,Windows media player,real player,quicktime, and even my nero 7 wich supports almost all media types.
When i downloaded all 3 of them they all had good rateings people have given them and i have no idea what to do maybe i am just dumb.
If anyone knows what else i could try i would be greatful b/c i am about to pull my hair out!!!