Hi, my old Rev. A macbook running 10.4 can run my 40" Sony Bravia through the Mini-DVI to DVI adapter>HDMI at full rez and full 1080p sized picture. I just bought a new macbook yesterday and I am using the same exact setup, but the picture on the TV won't go full size! There is about a 2" black space around the picture. I have tried downloading that custom resolution app, but I can't get 10.5 to go full 1080p. Someone on apple forums had this same problem, but it hasn't been answered yet. Thanks!