What sort of connections do you have on your TV adapter, last year I ran a Hauppage USB adapter with a laptop and used the same satellite kit as you but from Maplins.
As there is no rf output from the satellite box I had to adapt a scart to phono lead to connect to the phono outputs on the adapter - it is less complicated than it sounds - the scart to phono leads that are sold off the shelf seem to be wired to output to a scart from rca phono plugs and you require it the other way round.
If you want to tackle it - reply and I will try and post a link to the Hauppage help pages where I believe my solution is still posted (lots of people were asking the same question at the same time as I was looking for the answer).