Wow. Thanks. I'd have never known that there was a style setting like that that would change my GUI in the setup screen. How did you know about that? I could not find anything about that in any documentation that I looked at.
That said, I changed the setting from router to bridge, plus I went into the Netgear router setup and added the IP address and MAC address of the bridge to the list of devices on the network. I also rebooted the router. I'd have thought that the bridge would have been visible to the router and the network, but no joy. When I try to ping the 644, I get a message Destination Host Unreachable.
I have a DAP-1522 on the floor below and I tried the push-to-link on those two devices, but again, no luck.
I'm open to any additional suggestions.
Addendum: OK, got 'em both on the same channel now. For a while they were transmitting on different channels, which could have caused the problem. When the D-Link is physically connected to the Netgear, no problem. When I try to attach wirelessly, no joy. What a headache.