Hello :o) That is exactly what he is asking :o) How can I put several skies or other materials into one preset :o) I don't have the answer for this, but if you have it, I will be glad to compose the answer in french for you :o) I am a very new brycer, but I recently bought one of Jonathan Allen's package and it contains one .bsk file with 25 skies in it..... so it's possible :o) Elaine