I have a sky account but do not have HD account. Just bought an LG DVD recorder,which works fine. I understand that there is free access to some HD channels via Freeview. I inherited an hdmi cable with my new tv. I am at a loss as to how to, for example, receive BBC HD service. I plug the cable in properly and select the input Hdmi and just get snow! No picture it is as if the connection was not made although the control on the TV recognises the connection. What am I doing wrong please, or am I expecting to much?