I didn't know where to put this, but this looked like the best place to put it. A friend of mine and me shot a film for a school project. It turned out great and ever better when we edited it on his mac. I take a disk of it that he made and tried to get it on my PC. Well it's got that icon that is a peice of paper with the file in it (in other words no application is set on it) So I right clicked an opened and it works with both Quicktime, and Windows Media Player, but when I'm done watching it just goes right back to the (no application) sign! When I go to choose an application the 'use this program every time' is dulled out. What should I do?