To install updates manually, open Internet Explorer and go to http://windowsupdate.microsoft.com or select Windows Update from the Start menu. Click Scan for updates. Click Review and install Updates. Install all critical updates and relevant recommended updates. For screenshots, see http://www.jmu.edu/computing/security/info/update.shtml. (Note that you must have administrator privileges and that your computer will reboot after updates are installed.)
To run updates automatically and daily (which we strongly recommend), select the Automatic Updates tab from Start, Settings, Control Panel or Start, Settings, Control Panel, System, or Start, Control Panel, Performance and Maintenance, System. Make sure the Keep my computer up to date... checkbox is checked and select the Automatically download updates, and install them on the schedule that I specify option and Every day. Choose a time to run updates and click OK. For screenshots, see http://www.uic.edu/pharmacy/it/Tips/winupdat1.htm.