When you have a TV tuner that's designed for Windows Vista Home Premium or Windows Vista Ultimate, you can watch and record TV on your Windows Media Center PC by connecting to a TV signal and receiving the signal from an antenna or cable TV source.
If your PC didn't come with a TV tuner installed, you can add one at any time.
Add one TV tuner to:
Watch, pause, rewind and record live TV on one channel.
Watch a previously recorded show while recording another.
Add two TV tuners to:
Watch live TV on one channel while recording on another.
Record two separate programs at the same time.
Watch a previously recorded show while recording two separate programs at the same time.
Save 40% on special TV Tuner/Remote Control kit
Now in HDTV
Windows Media Center supports HDTV. Your PC will need a digital cable tuner (for HDTV over-the-air) or a CableCARD™ (contact your digital cable service provider for more information).
To find the appropriate TV tuner, digital cable tuner, or CableCARD for your PC:
Refer to the hardware documentation that came with your PC.
Visit the manufacturer's website.
Contact the manufacturer directly.
For a CableCARD, contact your cable or satellite provider.
Find additional information with the CableCARD FAQ