Windows Update

No operating system [Windows, Linux, Apple] is perfect. Hackers 'test' the operating systems every day, looking for vulnerabilities. Each week, and sometimes on a daily basis, certain 'holes' in the OS must be repaired, to prevent the hackers from breaking in.

Windows Update is one such service to the windows user. It is very, VERY, important to the security of your PC to either set you computer to automatic updates [recommended] or visit windows update, regularly.

Click Start -> Control Panel -> Performance and Maintenance -> System -> Automatic Updates tab