I have a black macbook.

I bought a logitech c910 webcam and have managed to install the webcam using the software from the site. When I'm using the logitech program it works fine (ie I can use the webcam when using their webchat software)

However it does not seem to be recognised by imovie or photobooth.

I'd like to use it to do live streaming, so need it to be recognised by ustream. However it's not on the list of webcams shown. I'm guessing this boils down to it not being recongnised by my mac.

Are there any fixes? Or anyway I can make it the default camera?