Don't bother. I had a hackintosh and while it worked, Apple can (and does) regularly update the SDK's minimum platform requirement, which means your hackintosh won't be able to keep pace with the new cool features in the SDK, since Kalyway and whoever else need time to reverse engineer kexts or whatever to figure out the new OS.
If you're serious about iPhone, get a Mac. You could probably find a first gen Mac mini (intel) for a couple hundred bucks. Or spring for a macbook and be psyched. The new ones are awfully nice.
