Ok, so I found this sawtooth that the guy is looking to just dump for $40 eek: I know!) and I thought it would just be a good machine to mess around with, what the hell, right? So, I know the onboard ATA controller has a limit, how much is that and I thought I read something about increasing that, how do I do that? Also, it has a half gig of ram, which is fine for now, and the stock GPU. Can I just put in a generic WiFi card or use a USB module? I have a new Airport base station at home, running G so I can't really use the old-school Airport cards, lol. Also, can I just put in a generic PCI HD controller if possible? I have been a Mac user for a couple years, but I just wasn't too solid on these old ones, thanks in advance for all the help.