Buy antivirus Windows Live OneCare 2.0 (Up to 3 Users)

All-in-one security for up to 3 Users from Microsoft protects personal and financial documents from the latest viruses, worms, hackers, spyware, and online identity scams
Automate "janitorial tasks," including disk cleaning and defragmentation, to help improve PC performance
Easily back up your files to a CD, DVD, external hard drive, locally networked computers, or most USB-connected storage devices
Protect your PC from outside security threats while keeping things on the inside running smoothly
Works with Microsoft Update to help ensure that your computer is up-to-date with the latest security and critical updates

Windows Live OneCare is the all-in-one PC security and performance service designed specifically for Windows XP and Windows Vista-based operating systems. It helps keep your PC's internal workings in order and protect it from outside security threats.

Automatically helps protect personal and financial documents, music, photos, whatever you're saving--from the latest viruses, worms, hackers, spyware, and online identity scams.

Automates "janitorial tasks," including disk cleaning and defragmentation, to help improve PC performance.

Makes it easy to back up your files to a CD, DVD, external hard drive, locally networked computers, or most USB-connected storage devices.

OneCare helps keep your PC safe and secure while making your life easier. From virus scanning, file backups, to automatic printing sharing of all the PCs in your household, OneCare helps manage it all for you. And it's delivered to you in a smooth, hassle-free package.In one convenient package, Windows Live OneCare helps protect your computer, uses its optimization features to keep your PC running at its speediest, and even regularly backs up your important files: Protection Plus uses antivirus and antispyware scanners, a managed two-way firewall, and integrated anti-phishing technology to protect your computer from viruses, worms, Trojan horses, hackers, phishing, and other threats. It runs continuously, but you can scan individual files and folders for viruses on demand simply by right-clicking them. You can even scan attachments you receive via Windows Live Messenger or MSN Messenger.Performance Plus regularly defragments your hard disk, removes any unnecessary files that may clog your computer, and helps ensure important security updates from Microsoft are installed efficiently and on time.Backup and Restore regularly copies your important files and settings to CD, DVD, external hard disk, network drive, or other data-storage device. Instant Help provides online help anytime you need it, 24 hours a day, 7 days a week