Do you want it to be HDTV ready? Do you want the ability to decode the 5.1 audio that is matrixed into some broadcasts? Are you looking for JUST a TV tuner, or would you like to be able to record programs as well? I'm sure that system set you back a ways, so how much are you looking to spend?
I've recently purchased a Gateway GT5012 Media PC, with an Intel Pentuim D 2.8 GHz CPU, 1GB RAM and Windows MCE 2005 OS. I've installed an ATI X700 Pro video card. It did not come with a TV tuner card. What is my best option for a TV tuner? Don't need one with any FM, just my cable in.