Well, after repeating the steps it is working. The "key" to accessing protectede networks is finding the network key, which is not so obvious with Airport and is described at
http://www.macwindows.com/airportpc.html, an old but still useful thread.
However, I wasn't asked for the network password (maybe I entered it previously while flailing around) and I don't know what I would use the Odyssey Client for. I thought it was for protected networks, but the Dell WLAN Utility can already connect to my two protected networks.
Can someone clarify this?
thanks.
Dave