I have tried it with a couple of my PCs. The biggest problem is getting all of the hardware to work. Basically, if the hardware never came in a Mac or Macbook (such as the Intel GMA 4500M graphics chipset in my laptop), then it's nearly impossible to find a Kext (same thing as a driver in Windows) for it, unless you want to write your own, in which case you would be pronounced insane and shot immediately. Unless, of course, you write drivers for hardware on a daily basis.
I had a bit more luck with my desktop PC, though my ATI 4830 graphics card never was quite right. Something wrong with the framebuffer because I had to use a twice modified 4870 kext that was again modified to work with a different brand of the 4830. So the screen would kinda freeze for half a second every 2 or 3 seconds, which is quite frustrating. It's supposedly fixable by flashing a different BIOS onto my card, but I don't really want to go that far.
If you have the supported hardware, it should be a piece of cake. I used a Kalyway 10.5.2 disc for all of my installs, and it goes on almost like Windows. Just make sure you read the directions and the
Kalyway wiki. I would highly suggest that disc because it also has Kexts for AMD CPUs, so it's quite likely that it would work for you.
I thought it was quite a fun project, but I eventually got to a dead end with my graphics card and realized that I wouldn't really use OSX for anything since I'm so accustomed to Windows.
I would suggest
InsanelyMac if you need help with any of the hardware stuff. It really helped me out a lot.
(Not sure how you'd buy a legit key since Apple doesn't really want people installing OSX onto any computer, but you could buy the Leopard or Snow Leopard disc for like $30, I think.)
Kalyway wiki:
http://wiki.osx86project.org/wiki/in...ualBoot_10.5.2
InsanelyMac:
http://www.insanelymac.com/
Good luck,
Brijar!!!