I can't off the top of my head. Check out this guys site. It may help you out with some stuff.
http://www.robrodriguez.com/
More than that, I think this is what you are looking for:
http://www.robrodriguez.com/robrodri...20Tutorial.pdf
Good job on the rims by the way. Photoworks rendering is pretty good once you get the hang of it. You
are a lot better at it than I am.