I assume that you mean Topup TV. Freeview, as the name implies is Free to View. For Topup TV you need a decoder in the box, a smart card reader and a Conditional Access smart card. (Supplied by Topup TV.) As far as I know Topup TV's encryption has not been hacked so you can't do watch it for free. Plus, of course, it is illegal.
t, June 2007