I jst got a xbox 360 and its pretty cool, but im having trouble putting it on hdtv mode on my Samsung LTM1775W. When i use the hd cables it came with and start playing, the color is dark and ive tried adjusting my tv and the xbox itself. all the colors i see when i play need for speed carbon with the regular video jacks is dark and basically not visible when on hdtv cuz everything is dark and shadowy, how do i adjust settings to get the best picture and color>?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic