If your TV signal comes from a cable TV jack in the wall or an over-the-air antenna, follow these steps to set it up in Windows Media Center:
Many cable or satellite subscribers have a cable box (sometimes referred to as a set-top box) or satellite receiver. You can set up your TV signal to pass through one of these devices on its way to your Windows Media Center PC.
Cable boxes and satellite receivers can include channels that are either standard or high definition. In Windows Media Center, a digital high-definition signal that is transmitted
through one of these boxes will be converted to an analog
For information about setting up the Hauppauge HD-PVR, click here.