I see several vendors are selling upgrades, and I would like to upgrade my new tcd652160 (Tivo HD) myself (to save $135 or so - i.e. a raw Seagate DB35 750gb is about $265 at several internet stores or I could go to a Tivo upgrade vendor and get one with the image installed for $399). I have searched this forum for "tcd652160" and get zero hits. Is there any way to get an image for the tcd652160? I am kind of a novice to this forum, so sorry if I missed it and thanks in advance for any possible help.