I was using the antiquated, deprecated phpcoin (www.phpcoin.com). Big legacy transition problem?
No, not so big - less than 3 weeks' intensive work, coding my own plugin to interface with the legacy database, fitting a new theme, and the site was done. WordPress has saved us huge time and money and given us a beautiful site.
See also - WordShell - wordshell.net - WordPress admin from the command-line; also coded in WordPress.