Norton AntiVirus 2012 protects your PC against the latest viruses, spyware, and other threats. It delivers fast, powerful online protection to keep you a step ahead of cyber attacks. It lets you chat, email and share files without worry, updates automatically, offers easy-to-use features, and includes free customer support during your subscription period.The simplified layout offers Scans on the left, Updates in the center, and Advanced tools on the right. Clicking on one reveals controls specific to that area of protection.Bandwidth Management limits Norton's processes and updates when you have limited bandwidth or monthly downloads. Download Insight 2.0 now tells you how stable a download is before you put your computer at risk for crashes or other bad things to happen. Norton Recovery Tools help remove threats that can be deeply buried in a PC. It works in XP/Vista/Windows 7 operating systems.
Go to this link Norton Antivirus 2012 and select 90 days trial version and download and install in your computer. Use with safe to your computer.