Hi jcis,

That's pretty cool app. I did one like that in Java using many balls balls bouncing off the walls of the Form and if any two collided they blew up. I'm wondering, however, if this will resolve the OP's request as I was under the impression that he wanted a random like movement without any rhyme or reason to direction of the object, kind of like an aquarium of fish freely swimming around in all directions, instead of straight-line. I guess he will say so. Anyway, like I said, it is a really cool app.