I have an old iMac running Leopard and I would like to use it as an AppleTV-esque media center on my TV. I have the TV adapter hooked up and the screens in mirror mode so Front Row shows on the TV and the built in screen. Is there anyway to shut off (or make the internal screen black [you can't turn the brightness all the way down like you can with a laptop]) so the video just displays on the TV / VGA out? Also is there anyway to get iTunes to share Album art over the network (a plugin or something)? --Thanks!