Ah...thank you. I think I'll have to wait on this until I have the nerve to start doing things with the database! So far I've resisted, because I don't have absolute confidence in how to restore from a backuup, in the unlikely event that should become necessary! I have been doing the occasional backup (using, what is it?, the myphpadmin tool), but I'm still not confident about what one DOES with the resulting file, if you have to use it...
(I've also noticed a tendency to assume we can access the database via the threads admin section, but I can't, and I gather that's characteristic of threads that's running on a shared server...)
Thanks again - Tony