Quoting Jason Davies, from the post of Wed, 09 Feb:
ok, have made some progress in reverse-engineering all
this stuff...now
a simple question.
When the sysop doesn't have an email address, how can you reset the
password? running mediawiki 1.3.1...
I'd go edit the database table directly. it should not be too tricky if
you have phpmyadmin installed.
--
Can't touch this
Ira Abramov
http://ira.abramov.org/email/