Hi Acrylian,
Thanks. I understand things better as I proceed.
First, I seem to have a problem with my installation... if I go to http://zen.tryx.org/admin, I get "The requested URL /admin was not found on this server.", but if I go to http://zen.tryx.org/zp-core/admin.php, everything works as expected. Is this .htaccess or something else?
Second, suppose my theme doesn't support user log-on/off or I don't want to present the user log-on/off option... Some viewers are "tourists", simply looking, and some are "participants". How do the "participants" log on? http://zen.tryx.org/admin? So, maybe instead of requiring that they know yet another secret, I should present user log-on/off. I guess I need to investigate the themes ...
Thanks for the help,
Chris.