Yeah, I do have a spare HD, but I just popped it into my server unfortunately
It wouldn't really work anyways seeing as all of the ports on my PC are already taken up.

I don't really care as much about losing my main drive partition because I've got everything backed-up on my RAID and is where I keep all my media. I just need to reinstall programs which takes about an hour for all my big programs besides CS3 and Office. I've used mac before (10.4.9) on my old server machine, but I just got my new computer for graduation and figured that I'd give it a shot. Thanks for the tip about using a USB drive. Didn't even think about it even though you could do the exact same thing with windows... LOL. I use Windows extensively and use Mac for fun. I'm a gamer so Windows is where I'm needed + I just find it a lot more compatible and less nerve wracking to use. But I'm also a computer enthusiast, so I prefer to have a wide understanding of hardware and software. I've sorta lost hope with Linux, I just don't see the mass appeal when you need to sudo everything, but on Mac I've noticed that it just isn't as irritating. The Linux people always seem to be raving about how nice it is and how nice it looks, but as far as I've seen, the only way to really do anything on it is all through a terminal which annoys the hell out of me because I copy lots of files and such. And I prefer organization so it usually ends up being depths of folders and copying my terminal just gets too annoying that just drag and drop. (I don't keep everything on my desktop like most people)

My specs:
psu: 650w Antec EarthWatts
mobo: MSI K9A2 Platinum 790FX
cpu: AMD Phenom 9850 BE
gfx: 2x ATi Radeon HD 4850 512mb
ram: 2x 2GB Corsair Dominator PC2-8500
hdd: 1x Seagate 250GB (PATA)
3x Seagate 250GB (SATA-I) / 1x Western Digital 250GB (SATA-II) (RAID 0)
optical: Sony DRU-530A (really old, but it works well xD)

EDIT: Oh yeah, I'm also just experimenting with Mac right now because there isn't support for my gfx card yet and probably won't be for a while, so I'm just basically at the mindset now that it SHOULD be possible so I'm GOING to make it to happen.