I have a Tivo HD. I have Verizon Fios. I am looking to get a Roamio to replace the Tivo HD. Can I just swap the card into the new unit or must I call or have Verizon come out to do some setup? What is I had Cablevision, because I might switch back to them next month when my deal with Verizon runs out and they don't offer me a better deal than Cablevision can.