TopUp TV and Setanta Sports are two completely separate subscription services available on terrestrial digital TV. You don't have to subscribe to TopUp TV to receive Setanta; all you need is a 'box with a slot'. Such boxes are available quite cheaply, e.g. this one costs �39.99 at Argos:
http://www.argos.co.uk/webapp/wcs/stores/servl et/Search?storeId=10001&catalogId=10651&langId =-1&searchTerms=5320345&go.x=0&go.y=0
Once you've got your new Freeview box, you simply unplug your existing one and put the new one in its place. (i.e. 'installation' is effectively non-existent). Then all that hubby needs to do (why should you do all the work?) is to phone Setanta to subscribe to their service. (�9.99 per month, with no annual contract). If he tells them that he's got a box with a slot, they'll send him the viewing card to put in it, and then he's 'up and running'. (I've just phoned Setanta, to confirm that bit for you):
http://gb.setanta.tv/freeview.htm
As stated, you don't need to get a box from TopUp TV, or to subscribe to their service. However, if you are interested in getting TopUp TV, details are here:
http://www.topuptv.com/
Chris