Thanks guys, you've made some interesting comments which sent me investigating...
@prggmr: I take it you mentioned the T60 and the 41W1370 motherboard because that's the spec of the machine listed in Silencer's link? I suppose one of the best ways to ensure your hardware works is if someone else has already gone through the dsdt and kexts, worked out the bugs, and posted a step-by-step tutorial!
@sanjuro: Thanks for the X60/1 recommendation and for linking the insanelymac site. I've looked through it a few times before along with tonymac, lifehacker, etc. I didn't quite understand your comments re: not using sandy bridge and it seems the nvidia graphics reference would be for newer machines, or at least newer than ~2007 vintage.
Sounds like I'd have a good shot at it with either T60/1 or X60/1.