the lcd panel has a fixed number of pixels, you can go lower cause the screen can add a border or stretch it, but you cant go higher ... even if you can fool it into running 1280x1024 on a 1024x768 lcd what will happen is, you will see 1024x768 worth of area and not anything outside that, some screen controllers will allow you to scroll to that area, but its much more annoying than the lower res