Microsoft's Security Essentials is a smart way to secure your computer
...it's Free !
Security Essentials includes fully update-able Anti-virus, Malware & Spyware protection.
Here's the Official download site:
http://www.microsoft.com/security_essentials/PLEASE be aware of malicious attempts that are SPOOF downloads.
Only download directly from this Microsoft website, and no others.
See the article at this website for more info on Malicious Spoofs:
http://windowsteamblog.com/windows/b/windowssecurity/archive/2010/10/25/fake-microsoft-security-essentials-software-on-the-loose-don-t-be-fooled-by-it.aspxMinimum system requirements for Microsoft Security EssentialsOperating System: Genuine Windows XP (Service Pack 2 or Service Pack 3); Windows Vista (Gold, Service Pack 1, or Service Pack 2); Windows 7
* For Windows XP, a PC with a CPU clock speed of 500 MHz or higher, and 256 MB RAM or higher.
* For Vista or Windows 7, a PC CPU clock speed of 1.0 GHz or higher, and 1 GB RAM or higher.
* VGA display of 800 × 600 or higher.
* 140 MB of available hard disk space.
* An Internet connection is required tor install and download latest virus and spyware definitions
* Internet Browser:
o Windows Internet Explorer 6.0 or later.
o Mozilla Firefox 2.0 or later.
* Security Essentials supports Windows XP Mode in Windows 7.