Let's face it... the transition from analog to digital broadcasting is confusing!
Here's the nuts and bolts:
If you have an older tv that has an analog tuner... your tv will work as long as you have cable or satellite.
If you get your signal from an antenna and you have a tv with an analog tuner, you will need a converter box.
If you have a newer tv with a digital tuner, you shouldn't have any problems.
You can still get a converter box. Coupons are available at 1-888-DTV-2009.
To answer more questions you may have, check out this link: