Only those who only get TV programming using a roof-top antenna or rabbit-ears antenna risk losing their TV signal entirely.

Cable customers may need a set-top box to receive DTV signals and convert them, even after the DTV transition is complete. Satellite customers may need a different set-top box in order to receive high-definition programming. Check with your provider to determine if you will need a new box.

If you need it, you can purchase a digital converter box -- one for each analog TV, VCR or DVD player.

The government is also offering up to two coupons, each worth $40, to people who want to buy converter boxes. You can get them at DTV2009.gov or 888-DTV-2009.

When you apply for coupons, the government will help you determine if you really need them.

They come as plastic cards and are good at major retailers for 90 days after they are mailed.

The government suggests that you call before heading to a store to make sure converter boxes are in stock. Most of the models suggested by the government sell for between $50 and $60 before the coupons are applied.