USB TV card and Linux

Hi all. I have searched for info on setting up a USB TV card under Linux and have been overwhelmed with the amount of info. Harvey Norman have a Kaiser Baas USB TV stick on sale at present for $48 and a Kaiser Baas dual device for $87. I thought I would take my notebook (Suse 64 12.1) down there and try the device in-store. What programs should I install before I get there, please? What is the advantage of the dual tuner stick? Thanks Andrew Greig