Hi Anis,
So in animation packages, they have things called "emitters" and "modifiers" (or various names) that do special things. Behaviors and stuff. Like for a spinning fan, you can just have a fan model, then you apply a "spinner" Behavior on it that will animate the fan blade spinning, and have params for speed, rotations per frame, blur etc...

Cheaper packages like Carrara have these, with add-ons available. Smoke, fluid flow etc. Then the price goes up for better quality...


Do you have Carrara yet? It's a good place to start... If you watch, you can always get it for free, or the price of a magazine.

Blender should be able to do it. It has smoke emitters, and I've seen tutorials for doing tank treads which could be used for the belt. And the best part is that Blender is FREE!

http://www.blender.org/

Steve S

Yes Blender is THE PROGRAM !