I am due to have my living room Sky+ box replaced by an HD box in September. I want to put the sky + box in my kids room where they currently have a standard sky box multi-room installed. As the multi room install only uses one input cable and to work properly the sky + needs two will I have to book a separate install to add another cable. Also will that then mean I have to pay 2 lots of sky + subs ( 1 for the living room HD box and 1 for the bedroom ) ??