I've tried adjusting the gamma etc through the utility supplied with Nvidia drivers, which do adjust the look of the screen in 2d mode but the video overlay (and 3d games) are still too dark. If I crank up the brightness or gamma to fix it, then my normal 2d screen looks terrible - washed out. (I'm using a Miro video capture card which displays video in an overlay window) Any one know if there is a way of changing overlay image without screwing up the normsl image?