Hi I've never had Sky before so please forgive me if this sounds a dumb question. I'm considering getting Sky HD installed and i believe i will require a BT line in order to get it. I do have a BT line, but my BT socket is in the hallway about 5 metres away from the telly, so can i just use an extension lead to connect to the Sky box? Or does the sky engineer insist that the socket be located close to the box? And also, once Sky has been installed, do i have to leave my telephone line connected to the sky box or can i leave it unplugged? I won't be using Sky's interactive services which require the use of the telephone line. Thanks in advance.