I have used a Hauppage USB serial Satellite Reciever and it worked a treat.
It has the advantage that you can record programmes on to your hard disk as well as watching a different channel.
Didn't cost very much something like 60 quid. You can get them with a smart card reader or even use a separate smart card reader so you can get whatever sky channels you are subscribing to as well as the freebie freesat ones.
WinTV 7 software is quite good you can download the database of your chosen satellite's channels from their website so you don't have to waste time scanning for channels you just point at your chosen satellite and go!
Gives you the opportunity to store favourites per user too.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets