AbsoluteMart!
Your TV is most probably set to ANT instead of CATV... Brose your TV menu and switch it to CATV.

njk986
What you want to do is program your channels with the TVs auto-program. You usually have to open the menu and select CHANNEL SELECT or something like that and you'll have an option for auto-program. Give that a try to see what you're picking up. Also if your tv doesn't have a digital tuner (most older ones don't) you may need a converter box soon when all the channels go digital.