If you need help with DTV reception the FCC has a hotline at 1-888-CALL-FCC (1-888-225-5322). In addition, the FCC is requiring TV stations to have their own support lines available, which they have been publicizing during their programming for several months.
If don't know the number for your local broadcaster you can call the FCC hotline and they should be able to transfer you.
For general information you can also consult the last section of our guide Preparing for the US DTV Transition, which gives an overview of some reception issues and how to address them.
If you subscribe to either cable or satellite television this transition won't affect you unless you have TVs still receiving over the air signals through an antenna.