I'm looking to possibly get a TiVo Series 2, single tuner DVR (from ebay or Craigslist) to hook up to my Comcast DTA boxes. From what I can tell, these Series 2s do NOT have an ethernet port, correct? Therefore, would I need to get some sort of USB adapter (ethernet or wireless) in order to get them networkable? Or is this not even possible to begin with? If able to and once this is done, can online scheduling, MRV and pyTivo be used with this Single tuner TiVo (w/ USB network adapter)?