me too
I'm also trying to connect an isight external camera to my old macbook, but the macbook doesn't even register that it's there.
could it be that i need drivers?
i've searched long and hard for them but to no avail.
i want to have the camera high in the room and record what goes on.
did you have any joy figuring it out?
old macbook
1.83GHz Intel Core 2 Duo
OS X 10.5.8