you're looking for OSX x86 which is made to run Mac OSX on intel computers. it works but it's a pre-release so i dunno how far youll be able to get with it. not saying you will or you wont get full features, just saying i don't know.
here's the basic down:
http://www.osx86project.org/ take the "blue pill"
here's the advanced break down:
http://www.osx86.theplaceforitall.com/howto/
oh yeah, when you pick an OSX, go for Tiger. If you need an original disk image, hit me.
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