Mac vs. PC, what do you use?

[bmxmon]

Im actually DLing that gOS now to try out, I have an extra 500gb HD that I had bought to install OSX on. Do you know how I can run two sata drives, both with different OS's on them? If I have both of them hooked up (one with XP and the other with OSX) it just stalls the computer after startup and it goes nowhere. How would I even run it to have the 500gb as a slave to my other drive? I would like to clear OSX off of it and use it for other OS's which I could select at startup, then when im bored with that perhaps just use it as a backup drive. Advice on that would be great, thanks!