I've been thinking about this for a while and I've tried to do it myself. I can't seem to figure it out at all. For example, I want to be able to click a GUI button, have the model follow the mouse while having transparency set to 0.5, or something like that, and click down anywhere. I keep getting constant errors and I don't know where else to turn to. If anyone can teach me one thing, that'll be awesome. Thanks!