You'll need a box for each TV and they'll put all the cable in. I think there may be additional monthly and installation charges for extra boxes (I've got Sky and they charge an extra £10 a month per box). Telewest also had these additional charges but I think it was something like £9.50 per box. Once it's all installed, you then have 4 cable boxes that can independantly tune to different channels. You can check all these details when you phone up to order it. Just ask if it's possible to have it installed in 4 rooms (Sky has a limit of either 2 Sky+ boxes, 4 regular boxes or a combination because the dish only has 4 output sockets).