Windows Vista: Auto-Login

In Microsoft Windows Vista, if want to have your only user account auto-login each time you start your computer, then all you have to do is:

1. Click on Start, then Run... (Alternatively, you can press and hold the Windows logo key + R)
2. Type control userpasswords2
3. Clear the checkbox labeled Users must enter a user name and password to use this computer.
4. Now click on Apply, then OK

Done.

Note:
If you are using Windows XP Professional, then you can follow the same instructions as above.