Definition on my 480i TV? My TV does not have an HDMI outlet but the U verse box does, will I get a picture if I just hook the Blue ray disc player dircetly into the U verse box?
No. In the first place, the U-verse receiver has no input for that purpose. Secondly, there's no way you can display actual HD on a 480i TV, regardless of the input.
To get the most from a Blu-ray player, you really need a TV with a 1080p screen.