Looks cool, can't wait to see the finished work. One tip though, it's usually a real time saver to do a small test render of the animation with textures off just to see if motion and speed are correct. This usually will render in a few minutes or hours and will save you the extra 1.5 days if it is wrong. It's the computer equivalent of a "pencil test". Also if you are planning to transfer to video the correct aspect ratio is 720x486 pixels at 30 frames per second. I rendered a nice ten second animation yesterday after fixing my render animation problems. It was just a quick fly through several hundred asteroids against a starfield. It took about an hour an a half to render 300 frames at 720x486 pixels. It was averaging about 5 seconds per frame render speed on my G4 450. I can only imagine how much faster it would go on a new G4 866mhz. G4's and Bryce make a great pair.