To give credits has something to do with copyright in the following case: Some of us have given scenes to e-onsoftware for the CD. These scenes belongs always and however to the artist and the artist is the copyright holder of the scenes. E-onsoftware puts these scenes on the CD to allow users to learn, to study how such a scene were created and to help you to develop your own technique. It is OK to use the objects from the Objects folder on the CD, but it is NOT ok to use one of the scenes created by some one else, change the camera angle or add two trees and then present it as your own work. I think in this case you need to give credit in saying that the original scene from (name of the artist) has been modyfied by you. Here it is not any more a "give credit or not" question, but a copyright problem. And as erka pointed up the "credit" question, I had to add this copyright question. Of course, this is my personal opinion, you's may be different:-). Guitta