We have three locations we spend time at. At each location we have a cable company provided DVR. We are currently in SW Florida with Comcast and an Explorer 8300HD DVR which my wife is very unhappy with (too little room to store her TV programs). I tried adding an external drive to the DVR but it did not work. I was thinking perhaps a Tivo with a Comcast cable card might be more practical. But I have some questions..... Is the Tivo member/subscription married to the Tivo box? In other words could we carry the Tivo to another location, hook it up with the appropriate cable card and be up and running with the same membership? Do any of the newer Tivo DVR's have a built in wireless connection? Can I assume that Comcast in Florida, Time Warner in SC and Optimum in NJ will be able to provide cable cards that will work with one of the newer Tivo's?