[horde] can't login as administrator / configuration anymore

[Brian]

I just installed the latest release horde and imp, and it went fairly
smoothly. I got it set up to authenticate IMAP through IMP, and now I
can *only* log in through IMP, and I can't seem to log in as the
administrator anymore to make configuration changes.

Without scrapping my config and starting over (which I'm probably
going to do tomorrow after work), what can I do to log back in as
admin and make config changes?

By the way, I *did* specify users with admin privileges, so I'm not
trying to log in as some phony "Administrator" who doesn't exist.

-- 
Brian Voils