If you spend the time to research and get the parts that are supported by OS X, building a Hackintosh is breeze. I have had no problems with the one I built.
Their recommended builds are excellent, even if you were only to use them for Windows.
The best I had was a system which booted (incredibly slowly) and for which I could never get wifi working.
YMMV, but you have been warned. Even with good documentation, there is absolutely no guarantee you'll get anywhere at all.