Mailer Daemon 6.8.4

Please, I have Mailer Daemon 6.8.4 installed on my mail server using Windows 2000 server.
I wish to know where the user account information including the passwords are stored. This is because I’ll like to export this information to another computer as the current mail server is near crashing. I’ll verymuch appreciate the procedure or steps to use in exporting this information.
Thanks verymuch.