Solved Can't get 16:9 aspect ratio

I have a dynex 32" ws hdtv tv and a dell 1702fp 3:4. when trying to use the tv with 1280/720 res or 1920/1080 the tv still appears in a 3:4 aspect ratio with the black bars on the side. How can I make them go away?

Disregard.. figured it out. Tv requires you set source format for each in channel >_<