I'm running 7 on a thinkpad t43 (see specs) and I have to report that it is excellent. Performance is about equal to XP, massively better than I expected. I can't say it's faster, but it's not any slower than the well maintained XP installation it's replaced. As reported by Azural, windows update supplied all of the
drivers. Everything works, including the fingerprint reader (using windows supplied software) and bluetooth. The only drawback is that mine has the intel gma 915 graphics, so no aero. I don't know if the Ati X300 adapters work with aero.
Specs on these things are about that of a netbook, but I think performance is quite a bit better. For what these things go for I think they are an excellent deal, especially since they run 7 just fine. Most are off corporate lease, in good shape, and about $300. Built like tanks, yet lightweight.