Just an informational note: there's an excellent article on Digital Materials and Virtual Weathering in the latest Scientific American(Feb. 2000),pp.64ff. by Dorsey and Hanrahan that some may find useful.As someone who has been working at weathering bronze (with mixed results) in Bryce for a year or so, and who appreciates Fasttrax's magnificent textures, I find it general but interesting. The Pixar team is prominently referenced. Hopalong