I think his demo on www.nutty.org shows how a basic Vertex Program should be writen. e.g. vertex transformation etc.
For my part, I understand now, how it works and written my own VP for the setup of dot3-bumpmapping.
qwert
It is using hardware on GF3. Coding custom lighting algo’s by hand, can even be faster, as you’re making the lighting equations specific to your needs.
Nutty