Getting Programming Guide Data into TiVo Series 2 Units?

An Anonymous Coward asks: "The new (Series2) TiVos have been substantially hardened from prior versions, but, it looks like it might be easier to get foreign program schedules into the TiVo than ever before. The newest units support APG, Advanced Program Guide (tm). This is a program guide being sent via the satellite broadcasts to DirectTV receivers. I'm trying to determine if this is a standard (by a different name) and the precise interactions necessary to submit this data to the TiVo. Basically, I want to emulate a satellite receiver sufficiently enough to submit new programming guide data to the TiVo. What I need to do this are sample data streams from a DirecTV satellite receiver to a TiVo, or similar device. Once this is done and working it will be possible to supply any Series 2 TiVo with program guide data for any region in the world (if such a schedule can be obtained). Note that this should not require breaking TiVo's subscription model."