You have to buy a HD ready TV or connect your TV with a Set Top Box.

In order to watch digital channels one needs to first purchase a digital set top receiver box. These are relatively cheap nowadays and won't set you back more than $50 for a standard unit.

Sky digibox is a digital form or set top television box that specialises in Sky news and sky channels through HQ and digital TV while also servicing other channels.

To tune into HD channels there a a variety of methods available to consumers. These include a digital set top box, a digital antenna, a satellite receiver or a QAM tuner built into the television.

With one box in the main room of the home you can connect different tvs with cable to the oher rooms. Unfortunately you are unable to view different channels in each room with this set up. If you wanted different channels in each roo you would need multiple receivers.