Hi, I currently have to rent 2 cable cards from Verizon Fios at $3.99/mo each for my Tivo Series 3 (TCD648250B). I have seen on eBay, numerous vendors selling Motorola M-Cards for around $20 each, which would certainly be more cost effective for me in the long run. The question is, would Fios ever allow this? Before I sit on hold with Verizon in hopes of asking the question who might even know what I am talking about, I figured I'd ask you guys: Has anyone out there ever bought 1 or 2 cable cards for use in their Series 3/4 units and were able to convince Verizon (or Comcast, I guess as well) to allow them to use them instead of renting? And if so, what brand and model cars did you use? Thanks for your help, Thos.