What accessories do I need to watch TV (satellite or free) on my PC?

Want to enjoy digital ATSC TV on your notebook or desktop PC? All you need is this WS-ATSCU03AD ATSC/NTSC USB 2.0 TV Tuner Adapter! Just plug it into an available USB 2.0 port to start receiving digital television signals over the air. The WS-ATSCU03AD features convenient digital video recording functions, instantly turning your PC or notebook into a DVR that saves content to its hard drive. Rewind and fast-forward live TV with Time Shift recording functions. Enjoy high definition resolutions of up to 1080i with high-quality digital AC3 audio output. An electronic program guide helps you channel surf and the included remote control lets you sit back and change channels from across the room. Start watching HDTV on your computer at or on-the-go with the WS-ATSCU03AD Digital/Analog USB 2.0 Hybrid TV Tuner Adapter.  This is selling on Amazon for $29.95.  Power Max has the Mini TV USB Tuner selling for for $40.75.  The Mini TV USB lets you take TV wherever you go! Using a regular TV Antenna or cable connection, you can now watch TV right on your computer screen. It's simple to install and no extra cables or power supply to carry around.  Amazon has a Pci Tv Tuner card selling for $83.95.  With PCI ATSC/analog TV card, you may enjoy watching free-to-air digital TV (ATSC) and analog TV on your computer! You can also record your favorite live TV and share it on the Internet!Never miss a beat with the true HD time-shifting function! Pause and replay live TV shows by simply pressing the pause button and continue after whenever convenient. Just like the VHS or DVD, KWorld PCI ATSC/analog TV card provides the advanced playback functions such as pause, instant replay, time-shifting, fast-forward and rewind. Forget about manually setting a recording time for your favorite TV program. Simply select the program you would like to record from the EPG program list with a click of the mouse.