Updated Oct 2011: It's now CA Anti-virus Plus v7 2011 and CA Internet Security Suite Plus v7 2011.
With all kind of threat from virus, spyware, adware and various negative elements, antivirus software is a must to protect your computer. And this is an opportunity for you to use CA Anti-Virus 2011 for free. For your information, getting premium software for free for 90 days is consider good when most of the software trial are only 30 days and sometimes there are some functions that may not be used in the trial period.
Offers by CA is made specially for Microsoft customers. You only need to go this link: CA Anti-virus Promo and select either software CA Internet Security Suite or CA Anti-Virus Plus v7 2011. You can opt for both. Fill in the required information. CA will send the link to download and activation codes to your email. Copy the activation code to activate your copy. You can install up to three computers. Act fast before the offer expire.
Note: In terms of performance, have no doubt with CA antivirus. Many large corporates in U.S. are using CA.
Updates: This offer is not available anymore.