I don't see why not, people have even gotten FFXI to work and that game is terrible in terms of compatability. I'm actually suprised WoW even works on Mac.

And yeah, roll Horde. I have a Lv.20 Troll Hunter at the moment, with some friends that used to play FFXI with me. <3

And uh, about warranty. I don't think many stores are going to take it back unless it's sealed. Because once you register it with the serial key, you can't make any other accounts with it, so they don't take it back.