Somehow you need "signal" to said card. How you get it there is up to you and what country you are in.
I'm looking at turning my PC into a DVR. I already have Vista Home Premium equipped, which comes with Media Center. I've been searching for a good TV Tuner Card and I've been getting conflicting information about what I need for the card. I've had my eyes on the Hauppauge WinTV-PVR-150. Some reviewers say that you need an antenna for a tuner card, while others say you can just plug a coaxial cable into the card. I would very much appreciate some information clarifying my confusion. Also, any recommendations would be welcome.