We currently have two 622's. One bought and one leased. Today we added a third (YEAH!) HDTV in our bedroom. One 622 has always been in single mode. The 622 upstairs has always been in dual mode. It's running a HD plasma in the living room. It was also running a standard tv in our bedroom,which we replaced today. We dont need a DVR in the bedroom. So I was thinking about getting a 211 to run it. My questions are...will I need to have it installed, or can i do it myself? I have no idea what kind of switch I have outside. Also does it need to be hooked up to a phone line? Thanks for the help.