One of the best things you can do to protect your PC is also one of the easiest: Make sure you are set up to get automatic updates from Microsoft. If you use Windows and other Microsoft software, such as Microsoft Office or Windows Live Essentials, then you should use the Microsoft Update service. You'll also get notices about new Microsoft software that you can download for free.
So how do you turn on automatic updates? Simple: Go to the Microsoft Update Web site. If you don't have automatic updates turned on, we'll help you through the process.