I'm thinking about getting my parents an iSight for Christmas, so we can do video chats. My dad has the previous generation Cinema display on his Power Mac G5: Do any of the current mounts that come with the iSight work for this display? The Apple Store website says it comes with three: It's not clear which mount, if any, would work with the previous display. Does the new magnetic mount still work with the old plastic display? Or is the laptop mount big enough to fit on the top of the Cinema? Thanks for any insight!