Thanks, Gregor. I Enabled port forwarding, using the Phex "Listening port," and exported my ("Internet port" on the LAN) host IP, and it now seems to be working.
I assume by "incoming connections" you referred to the "messages" report on the Gnutella Net tab? I had been getting LOTS of those. Now finally I can make some of those hits work for my peers....

A developer helping an end-user? Unheard-of kindness. Thanks again.