I just got my HDTV to work with my PC, but when I enable it, it cuts off the edge of the screen. I downloaded the latest instruction manual from nvidia, and it said to enable overscan or underscan, but I dont have the option to do so where they say I should. Plus, any resolution over 480p is illegible, thus meaning I cant read the screen. Help would be appreciated. Its a 26" Samsung Widescreen HDTV.