What's the best way to model gears in CATIA

I know that you don't actually need to have the gear teeth to successfully simulate a mechanism. I wanted to model the actual gear purely for aesthetics. I'm modeling, simulating and doing a FEA analysis on a few of the components for a senior design project. I plan to use this project as a cornerstone of my portfolio. Any advice would be greatly appreciated.
3 Answers

Below video can help you Mr. Juatin
http://www.youtube.com/watch?feature=player_detailpage&v=1NlZ97AHJto