Have to use the NA file, because the other file won't get recognized as firmware.
Once that is done, telnet into 192.168.1.1 to set up OpenWRT
uci del wireless.@wifi-device.disabled
uci del wireless.@wifi-iface.network
uci set wireless.@wifi-iface.mode=sta
uci commit wireless
iw wlan0 scan
then follow the steps here
Make sure to change the LAN settings to a subnet not shared by the "mothership" router! And also encryption type is PSK2 for WPA/WPA2 mixed mode - iw wlan0 scan did not show the same output as the steps on the page.
To change the default LAN IP of the D-Link network, simply edit /etc/config/network