The WAP-11 (access poin) is configured via a Windows program, or a web interface. As best I can tell, there is no difference in the configuration options between the two. As supplied, it comes "ready to work", with a fixed IP address of 192.168.1.251, a factory supplied password for configuration access, no authentication/encryption and wide open access.
So the first step was to plug it into the second NIC on a test PC, and configure that NIC to use the 192.168.1.0 network. And disable forwarding, so that the wide open access point is not connected to the network! The NetGear ME-102 configuration page contains the details of doing this, with the one change being the configuration file contents should be.
DEVICE=eth1 BOOTPROTO=none ONBOOT=no BROADCAST=192.168.1.255 NETWORK=192.168.1.0 NETMASK=255.255.255.0 IPADDR=192.168.1.100 USERCTL=no
Click on the Password tab at the top of the page, and you should see the password setting page. Select a password and type it into both entry fields then click apply. You should see a new dialogue with a Continue button. Clicking that button returns to the password dialog required to connect to the AP.
The access point is now slightly more secure than before, and it's time to configure the client and make the two connect to one another.