Hi: Second monitors are something I have NEVER paid attention to. Not even sure how it works. I am running ProTools (a professional audio editing program), and there are essentially two main screens- the "mixer" and the "recorder". I am running on a dedicated iMac running this (a 20", FWIW), and I am running Tiger with all upgrades (Leopard is not 100% on ProTools yet). So can a 20" Intel Core 2 Duo run a second monitor (AND the built in one, too)? If so, can I put the recorder screen on one monitor, and the mixer oin the other? And if I CAN do that, how do I move the mouse from one screen to another- are the "virtually" side by side? Thanks for the 411.