You usually need an 80cm+ dish to pick up good signals from europe, bigger the further north you go.

Get yourself a copy of What Satellite magazine, and then talk to a local fitter (not sky!!!) they will be able to tell you if you can pickup 2 diffferent satellite signals on one dish (by off setting one LNB to pick up a 2nd signal while the first is pointing at the weaker of the two signals you want)

You will need 2 boxes, one for sky and one for the other channels, you can use the sky box, but it's not a good solution. I have bought from HiSat before, but there are loads of good places around.

Edit: Try to find you local wholesale fitters warehouse, you can save a fortune on stuff if you fancy fitting it yourself, I've just done mine, for example, cost for fitter TV antenna £160, I did the job for £14.95!!!!

I do have an old Samsung digital STB that I was thinking of putting on eBay, it's basic (does have CAM slots!) if you are interested?

Cheers

Cris.