Due to my local Comcast going all digital, I have had to make my Tivo S2 dual tuner control a Comcast Scientific ATL digital box (with remote blaster). While the dual tuner ability is now severely limited (can't record two digital channels above ch20 at the same time), the setup works. I also have two free DTA (digital transport adapter) boxes in other rooms. The only really get the basic cable TV service (no PPV, On-Demand & other basic digital channels), but they work fine too. I had thought about trying to hook up this S2 DT to a DTA, but it only has coaxial outputs. Therefore, it would essentially be a single tuner DVR. I then wondered if I could maybe just get a much older, single tuner TiVo off ebay or something. possibly a Series 1 or 2. However, I am not sure what brand these Comcast DTA boxes are in order to get the codes & set it up properly with a TiVo. Any idea what brand I should use for set up purposes? Also, if I get a series 1, can it somehow be networked to my other two TiVos (S2 & S3) for multi-room viewing? Can a Series 1 be set up somehow for online recording as well?