I am in an area where there is no cable or DSL available and I am to cheap to do the satellite thing. I have a smaller LCD TV that is HD capable as well. There are like 6 inputs (HDMI, Component, VGA and Coax). Coax is the RF input. I purchased a digital antenna, connected the output of the antenna to the coax input of the TV. I now get channels that I didn't know existed and all of them come through in the standard analog signal and a digital signal. Some of the digital stations also transmit things in HD and the picture is just awesome.
Welcome to the club! I haven't had cable or satellite in decades. I use my rooftop antenna but you can use rabbit ears it doesn't matter. Look for the input that says "AIR". That will be your 'ole fashioned antenna input. If you have a roof antenna and can rotate it you'll pull in many more FREE channels. Assuming you have a digital TUNER built in your LCD set you won't be affected by next February's blackout of Analog TV signals.
Bresnan doesn't really offer "Free HD" when you have to upgrade your Set-Top Box to get HD and they charge you for it.