I've seen that CoreAVC have a MBAFF codec available now (don't really know what this is, but having read loads of threads about HD via Freeview, it seems to be a key component of a viable setup)

I'm still not clear about what else I'll need apart from a TV aerial and a computer (and even then I don't know what sort of spec I should ask for to be sure of getting the best picture quality).

Anyone care to offer a suggested shopping list?