Hi: I'm thinking about ordering Comcast digital voice phone service. I currently have comcast cable and internet and regular phone service. The digital voice will entail getting a new modem to which the phone is connected. Is this compatible with Tivo? Will I need to do anything differently? What problems should I look out for, if any? Thanks. Doing this will be way cheaper than my current local and long distance phone setup so I'm hoping that it's simple and has no impact on tivo. I have two tivos wirelessly networked right now.