So I just finished hooking up my PC to my 54 inch LCD TV. However, as you can maybe see in the picture, the screen only fills most of the screen. While the screen fills the top to the bottom, there is a good 4 or 5 inches on each side of just black. Is there anyway to change this so that it will fill up the entire screen? I have already changed the resoultions but none of them do it.