My friend picked up a new Mac Mini, and his wife wants to get him a game or two for Christmas. He used to play the heck out of the Doom and Wolfenstein on the PC... So I figure Quake 1 and Quake 2, and Doom would make a great gift for the mini. Where can I get these games for his mac mini? It seems like there are different versions or ports to use (fruitz of dojo?) Its been a confusing search so far... Thanks!