How can change windows XP Professional “Administrator” password ?

Windows XP Professional comes with more than one way to control the user accounts. However, it leaves one mostly hidden

• Go to the Start Menu and click Run:
• In the Run text box, type ‘ control userpasswords2 ‘ and click OK
• Uncheck the checkbox that says “Users must enter a user name and password to use this computer”
• Click OK
• When the dialogue box pops up, type in your username and password (if you do not have a password, leave it blank)

Note :

Don’t misuse this feature