Logging in as Administrator

The inbuilt user 'Administrator' is by default not shown on the welcome screen in Windows XP. If you want to log in as Administrator, hold the Ctrl - Alt key and press Del twice, this will bring up the classic logon screen which lets you type username and password to login. Type the username as Administrator and provide the password if set.
If you want to see the Administrator account along with all the users at the logon screen, Go to Start -> Run and type Regedit and press enter. Wait for the Registry Editor navigate to the below path.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList Create a DWORD value called Administrator if not found, give it a value 1. Now logoff to check the Administrator account on the logon screen.
Note: You must be having Administrative right to do this.