As I recall, RayDream had a plug-in (or a utility, or whatever) which prevented one object from passing into space occupied by another. This feature was tremendously helpful in avoiding embarrassing mistakes. It was called a Collision something-or-other, I believe. If there is ANY program that needs such a feature, it's Poser! Is anyone aware if Poser has this capability? If it doesn't, wouldn't it be an excellent feature for Poser 5?