Just to be celar about what I am looking for, here is a movie demo from Digital Element's World Builder: http://www.digi-element.com/movies/Sw.mpg I was impressed by the movement of leaves, plants, and the sea animation. That was something I can never do in my old Bryce 3D. Unfortunately, I have tried World Builder demo but can't seem to find a way to make the program work. I really like Vue 4's interface and rendering quality the most, if only it can do some animation like that... It surprises me to see that after two years of technical advancement (comapred to old my Bryce 3D), there is still a lack of a goid water animation in both Bryce 5 and Vue 4 (beyond the original material animation). Maybe some of the Vue users here can relay these wishes to those nice guys at E-On software and see if these are legitimate wishes to look for in the near future. Thanks for all your replies. This is indeed a very helpful and firendly community. Shihp -----