I've just upgrader my GFX card from an 8800GT to a 4870X2. My PC was running desktop/blu-ray etc perfectly at 1080p but now with the display set to 1920x1080 via windows and the ATI CCC the picture is boxed on all sides and I can't get it to full screen. I'm running it though a Sony 40W4000 with the pixel ratio at 1:1 (as it's always been) so I don't know what to do!?