jere Cox, follow guidance given here except uncheck the "SSID Enable" box for both 2.4 and 5 GHz radios.
Not entirely familiar with the Apple Airport Extreme...
Like all Apple products, it seems they use the "Airport Extreme" for several different model routers... Do you happen to know the exact one you have?
That all aside, the reason you are getting a NAT error is because you are already using a router (the HT2000w), which can't really be configured as a base station.
The best you can do is see if the Apple Airport Extremes you have can be setup in just an old fashioned Access Point (most decent wifi routers have this option), and connect them to the HT2000w, and setup each one using the same SSID and password as the HT2000w, but at the same time, making sure the channel on each and every one is different so that they don't conflict in areas where the signal overlaps. This would allow your devices to hop from one Wifi AP to another seemlessly in most scenarios.
If the Airport Extreme doesn't have Access Point mode, then I am unsure what to say/do, as Apple doesn't provide much in the form of documentation...
If another customer doesn't chime in, in a timely manor, you may want to ask at the Apple Support Community on how to best configure the device and take note that the HT2000w is a router it self and can't be set to bridge mode. https://discussions.apple.com/community/wireless/airport
I tried doing this but my wired HP printer will not work. It needs to work via DHCP. When I enable that setting in my airport settings I can print. I disabled the wifi settings on the Gen5 modem. Do I need to do something else?
I have my printer and the Gen5 going into my time capsule then connect to my mac.
