Microsoft is providing free security software called Microsoft Security Essentials for all Windows XP, Vista, & 7 users. It protects against many viruses, malware, and spyware.
If you are a Windows user, I strongly recommend using this in addition to your regular virus protection (not in place of it).
You can download the software here.
Practice safe computing with good virus protection.
The Geek Whisperer 
Thanks for the heads up!
I downloaded it.