My Samsung T260HD works perfectly fine with a VGA connection but is blurry/pixelated (something to do w/ the lines) when playing videos in full-screen with the DVI connection. Any tips or advice? My video card is a GeForce FX5600XT, resolution set at 1600x1200. I know my computer is an old POS but i'd still like for the monitor to work properly with the DVI connection.