Grabbed a copy of Vista and Office 2007 off the Select licensing site.

Did a fresh install of Vista RTM (Ultimate) in ~35 minutes on my T40 (2373-92U) which is a P-M 1.6 GHz, 1.5 GB of RAM, 100 GB HDD, with a 2X DVD burner.

The IBM a/b/g wireless MiniPCI card, ATI Mobility RADEON 9000, and the IBM Power Management device were not detected and required user intervention for driver installation.