Hello, I have a Powermac G3 (B&W) 450 in which I'd like to put a new, modest hard drive (40-80GB, tops). I do not know what kind I would need. The specs for the original hard drive are ATA/33, but can I put a different kind in? If this topic has already been covered, I apologize, and you can just link me in the right direction. Thanks for your help!