Whether you are on Windows XP, Windows Server 2003 or some other recent version of the Windows NT system you have probably gotten into a situation where you wanted to change your password but did not have a means of issuing a remote Ctl-Alt-Del to bring up the password change dialogue or, for one reason or another, you need to make a password change via the command line. In UNIX this is the normal mode of password changes but in Windows this is a poorly known skill but an important one. This is especially important on Windows 2003 machines as the normal password management dialogues may not exist.
To change your password simply:
net user username password
So for me that might be “net user scott mysecretpassword” and voila, password changed. Very, very handy.