When you type changepw /?, you receive:

ChangePW V02.01.00cpp  Joe Richards (jricha34@hotmail.com) November 1999

Usage:
  changepw.exe \[/d:domain\] \[/s:server\] /u:userid \[/p:password\] \[/a:(y|n)\] \[/f\]

        /d:domain - domain to manipulate userid on.
        /s:server - server to manipulate userid on.
        /u:userid - userid to manipulate.
        /p:password - password to set userid to.
        /a:y        - make account active.
        /a:n        - make account inactive.
        /f          - display current flags.

  Use freely; you are responsible for all results.