Here's an install Guide for i7
You can do a google search on "Hackintosh core i7 install" and find a bunch of articles on it. The i7 has been a little quirky, but I think that 10.5.7 added native support to the x58 chipset (for the 2009 Mac Pro's).
You should really go spend some time on insanelymac forums or infinitemac forums and get an idea of what your getting into.
I converted my Vista machine (Asus p5q deluxe, q9550, gtx260) into a Hackintosh just to see if I could do it. It was a lot of research, trial and error, but I have a very stable platform that allows full software updates without issue. The Hackintosh community has gotten very good at being able to get things working without modifying Apple's stuff.
You should go get a second hard drive and just use that to avoid killing your primary disk.
I actually have 4 disks now, Vista 64 bit, Leopard 10.5.7, Snow Leopard 32 bit and another for 64 bit SL. A bit of overkill, but you would be surprised how many times I've wiped out the installations and started over.
Also... When you search, you'll find 27 different ways to do something. Do some research, find the newer articles and try and use methods that don't step on the same kext's (kext names) that Apple uses. You need to research your particular setup, Motherboard (built in audio), Video and Ethernet chipset.
The easiest way is to find someone who was successful with minimal effort and duplicate that setup. Be aware that many have multiple video cards, etc., but that's more because just a few months ago, the community was still trying to get the modern video cards working and would just duplicate what Apple already supports to get it working. You will find that the latest NVidia and ATI cards are supported now.
Good Luck!
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