This should be titled, "I Tried Windows Gaming on a Mac and With a Lot of Effort It's Passable!"
Out of curiosity, does kid-you remember whether the drive came poorly tuned from the factory or if it drifted after the fact. (Or perhaps it was the disk at fault, having been written on a poorly tuned drive.)
I use a Mac to get work done. It would be nice to use it for a bunch of games, but I really couldn't be arsed. If I really wanted to game, I'd set up a PC gaming box.