DOH! Under preferences, I added a line to point to
C:\Program Files\AutoCAD R14\Support
and everything came back perfectly. Bust have been deleted somewhere along the line, or typed-over.
Since re-typing an existing path in Prefenences, I get the message "Dialogs are not available because DCL files are not loaded."
This happens not only in the menu I was modifying, but even when trying to edit existing text in a drawing, for example.
How do I get the DCL files to load?