IDVD Crops Movie When Burning DVD?

When I burn a disc in iDVD and i put it in my DVD player to watch it, the border of the movie gets cropped out, so i took my TV remote and i tried changing the screen preview from standard and went through all of them and even when i got to narrow, it cut the ends off and I can't figure out how to fix it. Can anyone help me? I have to put my brothers Bar Mitzvah Montage on a disc and give it to the videographer by today! and I am showing my parents and grandparents in about an hour! Thanks Guys!