How to set Windows XP to automatically log on to an account
If you do not want to see the Windows Logon Screen when your computer turns on, follow the instruction below.
Instructions
Click Start > Run
Type “control userpasswords2”
Click the ‘Users’ tab
Uncheck the box labeled ‘User must enter user name and password to use this computer.’
Click ‘Apply’
A dialog box will appear asking for the User Name and Password that should be automatically logged in.