Provided you can access the interior point it is both easy and straightfoward.
The box is connected to the cable box inside your home replaceing whatever you use at present. Connecting to your TV is either by Coax or HMDI ( advisable for HD reception ) depending on your TV.
The Hub replaces your old broadband connection simply swap the existiong connection to the Hub and your existing connectiong to your PC.
Ensure you can see the numbers on both before phoneing to activate.
Depending on the TV Box you may well find it can record esp if its their Tivo Box