As stated above the renderosity site is the best to start, its very large. Here are a few but no means all other free sites. fyi, if your compulsive obsessive like me and want to download all materials from every free site, youll end up with 800+ skies and maybe 2000-3000 materials. http://www.bryceworks.com/b4textures/b4tex.html http://www.3dmodelworld.com/brycematerials.asp http://forums.delphiforums.com/brycematerials/messages/?start=Start+Reading+%3E%3E http://www.hilltopdesign.com/materials/ Just use the usual main search engines for 'bryce presets' and youll find plenty more.