I have just recently started disk 2, and when i try to start the 3rd mission, the game kicks me back out to my desktop. I've tried an anylization of my computer, which is a hewlet packard 6643, and it's saying that some files are missing from direct6 drivers. I've tried reinstalling direct6 and even when it says that it's successful they are still missing from the anylization. I don't even know if this is part of my problem, but i love this game and i want to keep playing and would appreciate any help. Thank you.

Try installing DirectX 7.