switching to postfixadmin and converting passwords for mail-users

[albi]

hi,

i've been testing dovecot+postfix+postfixadmin and i'm very happy with
the results!

postfixadmin-website : http://high5.net/postfixadmin/

now i wonder how to convert passwords (from the traditional
password-file) from the old (normal) setup to this mysql-based setup
with virtual users

i've googled around for a while and looked at the postfixadmin-FAQ, and
found nothing yet

of course i can make the new install available for the users and provide
them with random passwords and then let them change it themselves, but a
script or something would be much easier and faster

-- 
grtjs, albi
gpg-key: lynx -dump http://scii.nl/~albi/gpg.asc | gpg --import