Dreamboat,
Many thanks for your advice! You've hit the nail on the head (again)!

As soon as I renamed normal.dot, the constant-saving-of-normal.dot by Word 2000 stopped. I have some macros and customized toolbars that are part of the renamed normal.dot, so I want to learn about Organizer, which I've never used.
I read your excellent article (
www.theofficeexperts.com/word.htm) and also the Microsoft support paper (
http://support.microsoft.com/kb/q214215/). From these I understand there ought now to be a normal.dot freshly created by Word, but I simply can't find one anywhere on my computer now when I do a search. (I've got Folder Options set to show all files, including hidden and system.) Won't I need to find it in order to use Organizer to import the settings from my old normal.dot?
Thanks very much for your generous help!