My friend has a dual 1.42 PowerMac G4, connected to his HDTV via DVI->HDMI. The Mac correctly identifies the TV and sets 720p as the highest resolution it is able to support. (1080i actually is, but doesn't look good and the video card likes 720p) It has a Radeon 9000 Pro. It is running Tiger. But it doesn't fill the entire screen. With overscan, it fills up TOO MUCH of the screen. We want it to fill right to the border of the screen without cutting off any. That way, iTunes, DVD Player, etc. can be used without pain. Is there a way to do this?