Just an after thought. I'm not sure on the legality of this. Youl'd have to mount an iso of mac osx which might be illegal where you are so check that out.
Youl'ld definitely void any warranties.
Looking at it, it looks quite complex and you might screw up. A Linux dual boot looks a more attractive proposition to me. I might try that if I decide to lose Vista. I like having a dual boot, it helps my disconnection anxiety.