Install took a long time (8:30 am to 2 pm), but almost everything is up and working fine. Basic recap of the install/updates: Existing system was 2 HR21 HD DVR's, 1 HR24 HR DVR with AM21 for off air channels. SWM dish/multiswitch. Whole House DVR/Internet access. Added (for free) 1 HR44 Genie DVR and 3 C41 Genie Mini clients. Only installed one client (per original DTV phone rep, "you don't need to activate the clients". Installed said he can't leave without equip being activated. Call DTV and they put 2 clients "on 6 month vacation hold". time will tell) Overall post install impression is the HR44 receiver is really really fast to respond to change via remote. C41 client is really small and easy to install behind wall mount tv in master bath. PIP on HR44 works really well, but not much time surfing channels and using the HR44. Update in a few days. Open issues/Questions: Installed said he had never seen a AM21 before (I've had it atleast 5 years or so). Otherwise seemed very competent and nice guy. Problem is there is no power cord with the HR44 to handle the AM21 since it needs its own cord. I called DTV after reading on here about how "DTV CSR will send you new cord..". Guess what, no dice. They tried to sell me a new AM21 for $50 and when I pushed back they offered to credit me $30. No thanks. What is the best way to get a new power cord/power up the AM21? One possible use for my 2 remaining C41 Genie clients is to use to connect an old color tv in my workshop. Its circa 1984, 13" sony, but still works and its free! lol. When reviewing the C41 connections, it support HDMI, composite and component...but how to connect C41 to an old coax/RF connector only TV?