Well, it's in two parts. The first part is downloading the trailer (PM me for a link). The second is to get pyTivo running on your computer. If you want more help setting it up, let me know. I use pyTivo to transfer pretty much any type of video over to my Tivo. It works amazingly well, albeit a bit slow - but that's mostly my machine and the fact that it's transcoding a lot of information.
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Matt