This tutorial will show you how to change the password from the command line on MSSQL Server or MSDE.
1.Open a command prompt window by selecting "Start"-->"Run...", and typing "cmd.exe" in the "Run" dialog box.
2.Change to the directory in which the MSSQL or MSDE utilities are stored (this is usually C:\MSDE\binn, C:\Program Files\MSSQL\binn, etc.).
3.Type the following command where <newpassword> is the password you have chosen:

