Hi, I'm trying to get Doom 2 running on my 15" Macbook Pro Running Leopard Version 10.5.7. I've done a search on macrumors.com, and google and can't seem to find anything to get this game up and running! I have the original Game Disc, but when i put the disc in, and try to install it says "You can't open the application "Doom II" because the Classic enviorment is no longer supported. Any way to get around this?