Turn automatic updating on or off

How to turn automatic updating on or off?

Vista or Windows 7

1. Press Win Key
2. Type Turn automatic updating on or off and press Enter.
3. Select Never check for updates (not recommended) under Important Updates listbox.
4. Press OK button.

Windows XP

1. Press Win+Break or right click My Computer and click Properties.
2. Click Automatic Updates tab.
3. Check Turn off Automatic Updates checkbox.
4. Press OK button.
5. You are recommended to Disable Security Center Warning too.