Greetings Sorry if this sounds like a stupid question, I'm a satellite newbie. I recently moved into a large (54 units) apartment block that was built about 18 months ago. The building has a communal dish on the roof and each flat has a wall panel that includes connections for terrestrial TV and satellite. If I buy a second hand satellite receiver on ebay is it as simple as plugging into the wall socket to gain access to the free to air channels? Or would I need get an installer to activate a link from the satellite dish to the wire that leads down to my apartment? I'm looking at bidding on a Grundig 3000 (with the S-Video out to connect to my PC) at ebay.