Anyone have any experience with usb tuners for Direct TV, or know if they even exist? Friend of mine was telling me about one he uses for cable but he can't find anything for Direct TV, let alone one that is USB. Also how would a revo1600 manage with HD recording through a tuner? I'm kicking myself for not paying for for the dualcore version but frankly all I needed was something to play 720p movies, but now I'm wanting to dabble in using it as a DVR instead of a torrent box.