Windows 7 or Vista Log On automatically

Type in netplwiz into the start menu search box, hit enter, and you’ll see this screen:
Note: If that doesn’t work, you can type in control userpasswords2 instead.

Uncheck the box that says “Users must enter a user name and password to use this computer”, and then hit Apply. You’ll see a username and password box. Enter in the appropriate information here and hit OK:

Note that these steps work perfectly on XP as well.