Cheers Smuf.
If you want to double the speed you can pay £42 a month from someone like madasafish for an ADSL connection.
It's going to give you 512kb down and 256kb up.
Also it's not shared by everyone in your street, it's a 20/1 contention ratio.. Cable is more like 50/1 I think, so overall performance is good. (or pay £100 per month and you getting 1024kb down, 256k up)
If your serious about a satellite connections, then there is a Patent for it. "6,205,473 entitled Method and Systems for Asymmetric Satellite Communications for Local Area Networks."
Check out
http://www.helius.com/index3.html , they just managed to do it in May this year.
/Raz