1. While on the Sky Digital channel, press [services] on the remote
2. Then select system setup and press [enter]
3. Now on the remote press [0] [1] and then [enter]
4. You will now be presented with a hidden menu that is used by engineers to set up your system. An interesting feature if "new installation" which enables you to reset the system if you are experiencing faults without having to pay someone to come out and repair it! Do use caution though on some other features as it was hidden for a reason.