kju: is a QEMU Cocoa port to MacOS. I haven't tried it yet - no Intel Mac yet - but I'll definitely give it a shot before I succumb to the probably inevitable purchase of VMware or Parallels. Built-in downloading of stuff from freeoszoo looks kind of nifty. Emulating a 500MHz PC won't win any speed awards for gaming, but may be a nice way to run all that old abandonware at least. (My own tastes there trend towards Commodore 64 emulation with VICE, which runs quite nicely on a 1GHz G4, but I do like pulling out X-Com every now and again.)