I am seeking some help on how modify the set-up of a network to accomplish the following: I have an old/unused Airport Extreme model A1143. My current topology is a MOT cable modem connected to a TC downstairs, an Airport Express upstairs above the TC but connected via a Netgear Ethernet over Powerline adapter. I would want to put the Airport Extreme in an adajacent room to boost signal and to give me some additional wired ports. I have the existing Airport Express configured as "create a wireless network" on the wireless tab, not join or extend. The TC, which is where the cable modem attaches is also set as create a wireless network. Both are using the same wireless network name, and the Express has router mode off. If the Express connected via EoPL is not set correctly, please let me know. It's purpose is to get the wireless signal upstairs more reliably and stronger. Is this what is meant by Extend...or should I have joined the WLAN? What settings are needed for the AEBS if I also want it set up to boost the signal on the same network? I'm using Airport Utility v6, so any comments referencing that version would be hepful. I assume either way I need to do a factory reset on the Airport extreme and update the firmware.