If it's regular 'freeview' you're looking for it maybe easier to consider one of the following:
USB TV Card:
http://www.amazon.co.uk/Creative-Dig...39280&sr=1-157
Internal TV Card:
http://www.amazon.co.uk/s/ref=nb_ss_...&Go.x=0&Go.y=0
Then simply plug a regular aeriel lead into the device, scan for channels and you should have access too freeview with a on-screen guide and the ability to record etc.
I've got one of these:
http://www.amazon.co.uk/Hauppauge-NO...ef=pd_sbs_ce_4 for my laptop, it works perfectly fine. As does the:
http://www.amazon.co.uk/Hauppauge-Wi...ef=pd_sbs_ce_2 I've got in the media center.
HTH