Not much info on what the tuner is but I'm guessing it's a USB stick type and not really worth £60 but you can't complain when it's free!
Media Centre is included as standard in Windows Vista Premium and above as well as the forthcoming Windows 7.
Since the submission form seems to lose the direct link here it is - http://www.microsoft.com/uk/windows/products/winfamily/mediacenter/ambassador.mspx
Freeview TV Channels on Your PC.
TV tuner giveaway - Try it out and tell your friends!
Become one of our TV Ambassadors! If youve already got Windows Vista Home Premium or Windows Vista Ultimate, you could receive a free TV tuner valued at £60 so you can enjoy watching and recording live Freeview TV channels on your PC.
Just turn it on, watch and record your favourite TV shows from over 50 Freeview channels including BBC Three, ITV2, Film4, E4 and Dave, and tell us what you think. Spread the word and you could win free stuff: software, games, an XBox 360, and an ultimate home entertainment system. You could even be in our next ad. Interested?