tv no useless?

As you may as well know the OLYMPICS= 2010 are starting tonight. And that leaves me.... you guessed it!!!!!! WANTING TO WATCH THEM. now I don't know about you but I have a regular TV. it is not HD. So basically--- can I even watch it any more? This is a question for everyone out there to help me with because I don't know. I DO KNOW that things have supposedly been digitized and now one cannot(?) capture Television signals through the air with an antennae?????? Or could I. I see videos on YOutube about how to make your own HD antena, but this is irrelevent to me because I have SD or STANDARD DEFINITION OF TEVELISTION SCREEN. Most of the interenetweb tells me WATCH online. well, ok, but is this SKetCHY()()(?()()()
rokcy