John,
Couldn't it be set up like the "Keepers" section of the Lighthousekeepers site? When accessing that portion of the site, we were prompted for our name and password to enter.
The job of course then falls on you or HL for comparing registered users to the HL list of members for accuracy before allowing their existing password to work for access. Maybe a 3rd person (volunteer) could handle the checking and controlling of the password log-ins. I'm sure the argument to that would be giving a non-HL employee access to the society members master list, site registration and password list.
Maybe Tim or someone has a program idea that could run it automatically somehow. I'm sure the master society list has to be on an HL computer somewhere to copy into the program without too much of a hassle.
-RodW
[This message has been edited by Rod Watson (edited 11-23-98).]
