I realise that probably this has been covered before yet I am unable to find such a thread. I am attempting to tune in Media Center PC connected to a Thomson Sky didgi box. The technician palyed around and left after using channel 68 which returned the customer information channel. When going to Media Center - My TV - Live TV I then get channel 1, 2 etc shown on the bottom of the picture but no reception (only a grainy image). The guide has been set up and appears to reflect all the channels. I I go to Media Centre - settings - TV - TV Signal set up - this has been set up for 68 which is the Sky information channel. I do not know how to change this so that I can receive the various channels to which I have subscribed.