QUOTE
It crashes right after i click start in the briefing i dont even get to see the game.
From that, I would assume the briefing works fine, but it crashes before he can get to the actual map. That would be somethign not related to the briefing or triggers unless he holds down Enter and always tries to skip the briefing, and doesn't realize that the briefing is crashing.
I assume though that it's something in the map. He may be using something from the Unused folder, something is off the side of his map (although that's never crashed me), he has a lot of units stacked that don't normally stack, like Marines. Perhaps he has 800 stacked randomly stacked buildings, that can casue problems. He may have too many units on buildings. He may have an invalidly sized map like 125x125, he may have extended units that crash the map. There's too many possibilities, but try deleting a lot of stuff that could be casuing problems and retrying the map (with a back-up copy of course).