Possible to Chroma Key a Model?

Hi all,

I posted this question in the compositing forum as well (by accident), think I posted it in the wrong place, and I titled it as Alpha instead of Chroma Keying.

I would like to chroma key an object, is this possible? I have a television in a scene I am designing and would like the TV screen to have a chroma key so I can let Adoe Prem or AE do the video work on that section. Is it possible to do this?

I tried just green screening the section, but antialiasing is causing a problem with Adobes Prem keying effects.

Thanks

I think so, but it would probably involve keying rotation of the knob to the chroma, something which I have no idea how to do.