Thanks for that feedback Pine Man.
I have recently bought the same product, and although I have managed to get 67 channels, it was a trial and error process - the signal gets stronger if I hold the USB stick??! And I only have an internal ariel.
I haven't got around to setting up media centre with it, will give it a go soon. there was an FAQ on how to set up mc on the Hauppage site, as well as Vista drivers