I think that you'll find the equipment is too expensive and the key codes are hard to get hold of, hence why very few, apart from the really in the know people can do it. I'm sure that is covered in at least one of those threads.
I think those feeds are from lyngsat I want the SIS feeds too video and the raw data but from what I here they are broadcast in 4:2:2 format which normal digi boxes don't do however from another forum I here that Sky star card with 2progdvb" will decode this format!!!! although I cannot confirm!!!!
also they are on the Intelsat 20 deg west again I can't confirm
If any one has any further info to add then please contact me as i think getting these feeds would be a big **** u to the bookies who own SIS
Also I'm told they are not techmnically encrypted as the format they broadcast in really makes picking up the feeds too expensicve to a local joe
alternatively pay £7000 and get a domestic SIS subbs you have to sign up for 3 years but if your betting in-running or set betting on the exchanges or even prospective arbing you shouls piss that in proffit in a month or 2