You can configure Windows XP to automate the logon process if your computer is not part of a domain.
1. |
Click Start, click Run, and type control userpasswords2. |
2. |
Clear the Users must enter a username and password to use this computer check box. |
3. |
Click Apply. |
4. |
Enter the user name and password you wish to automatically log on with, and then click OK. |
5. |
Click OK again and you’re all done. |
Source: Â http://www.microsoft.com/windowsxp/using/setup/learnmore/tips/knox2.mspx