use pearpc. its a powerpc emulator. if you actually bought the OSX disc then you can install it. on my machine i have it on a 15gb partitoin. it lacks a few things like using your real graphics card and no sound >.< but if you need to open mac files or do anyhting mac specific then it really helps. what is you system specs? i have a 2.4ghz athlon64 with 1.5 gigs of ram. i can emulate a G4 at 1.2ghz and i let it use 512mb of my memory and it runs great.