Hopefully someone can help me. I need to disable the built-in iSight camera on a Macbook Pro but allow other USB connected webcams to function. Specifically, I'm using a program called Witness that uses USB webcams as a motion triggered security system. The problem is that in order for the softwrae to utilize more than one camera, each camera must be on its own high-spoeed bus and cannot share bandwidth with the built-in iSight camera. I've read the many posts about moving files from the Quicktime folder to disable the iSight, but I've read that this action also disables ANY USB webcams from functiong. Please help.