Bypass The Windows XP Log On Screen

To make logon an unattended process:
Click [Start] [Run] and type control userpasswords2 Click [OK]The [User Accounts] Property Sheet displays.On [Users] tab, clear the [Users must enter a user name and password to use this computer] check box.Click [Apply]. Enter a user name and password that should be used to logon automatically in the dialog box that appears.Click [OK]. Go to [Control Panel] [User Accounts] [Change the Way Users Log On and Off].Uncheck [Use the Welcome Screen] and [Use Fast User Switching]