Sky TV is a digital television company based in the United Kingdom. The cable company is similar to cable companies in the United States in that you need a digital HDTV receiver box if you want to obtain HDTV programming. This box is referred to as the Sky Box and can be obtained from Sky TV by upgrading your TV package to HD.
Connect the cable running from the wall into the "In" port on the Sky Box HD receiver. This cable brings in the signal to your receiver. Make sure the cable is securely fastened to the receiver, otherwise you might experience image and audio issues.
Attach an HDMI cable into the HDMI port on the Sky Box HDTV receiver. The HDMI is a single cable that provides both HD audio and video signals.
Plug the other end of the HDMI cable into an available HDMI port on the HDTV.
Power on the HDTV and the Sky Box HDTV receiver. Press the "HDMI" button on the TV's remote control. This will display the cable contents of the HD receiver onto the television.