Most TV Tuner cards have analog video capture. If you've got cable internet, you can get a cable splitter to plug one cable into your modem and the other into a TV card. That way, you can capture analog video & view and capture TV programs. TV tuner cards tend to be more expensive, though. Hauppauge makes good TV Tuner/Analog Video cards.

Hauppauge's cards:
http://www.newegg.com/app/viewproduc...tion=Hauppauge

If you just want a capture card, you can choose something like the Prolink X-Capture that has just an S-Video and RCA-video jack on it for $20-40. If you use one of these, you also need to plug in a 1/8" to RCA audio adapter in your Line-In jack and set your capture software accordingly.

Prolink's X-Capture:
http://www.newegg.com/app/viewProduc...144-301&depa=0

Example of a 1/8" to RCA audio adapter:
http://www.radioshack.com/product.as...5Fid=274%2D883

Again, whatever you buy, make sure it has hardware capture.