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.