We were interested in a Dreambox until just recently when our own satellite guy explained exactly how it worked... (he does sell the dreambox too).
We were led to believe by someone we could pick up Sky using a dreambox but now turns out it is only possible if you have a dish the size of a house to collect the signal before it gets fed into the box to be decoded. We do have a dish but ours is connected to ART via Nilesat. We would be able to receive all the Showtime channels too if we had dreambox but if the guy running the server that provides the decoding codes gets raided and closed down - bang goes your signal and your pre-paid subscription. End result - NO CHANNELS
Sorry, no longer interested in dreambox!