Systems administrators that manage local administrative accounts on multiple computers regularly need to change the account password as part of standard security practices. PsPasswd is a tool that lets you change an account password on the local or remote systems, enabling administrators to create batch files that run PsPasswd against the computers they manage in order to perform a mass change of the administrator password.
Just copy PsPasswd onto your executable path, and type "pspasswd" with the command-line syntax shown below..
PsPasswd works on Windows NT and higher.
You can use PsPasswd to change the password of a local or domain account on the local or a remote computer.
usage: pspasswd [[\\computer[,computer[,..] | @file [-u user [-p psswd]]] Username [NewPassword]
PsPasswd is part of a growing kit of Sysinternals command-line tools that aid in the adminstration of local and remote Windows NT/2K systems named PsTools.