Ok here's my problem, I have alien vs predator 2 for pc, haven't played it for an extremly long time. I still have the discs for the game and decided to start playing it again. I have everything installed but im missing the primal hunt expansion pack disk. I made a backup of the game along time ago but all I have for the expansion pack is the expansion.bin file. Is this of any use? anway to install the expansion with just the .bin file? Also I've misplaced my cd key, where can i buy a new one?