Mac Built In Cam is Making Me Mad.

I bought a new webcam that is mac compatible and I'm getting a mac compatible digital camcorder soon for making better quality videos.

But for the webcam I talk to people on it and what such. I really hate using the mac's built in webcam but everytime I turn the webcam on for yahoo or stickam, youtube, etc... it comes up with the mac's built in cam.

Is there a way I can shut this thing off so it only uses the usb webcam?

Didn't work. >.>

bleh whatever I'll just use the stupid normal cam with messenger chats other than ichat and imovie, the only the webcam does appear on.