If you are in dearth of a good security software and found no way other than choose between trial versions to protect your PC, you can try Comodo Internet Security Pro 2011, which is from Comodo a trusted name in Computer Security, free for one year.
The main advantage of CIS Pro 2011 is that it is proactive. The Default Deny System in CIS Pro 2011 lets the user (you) know when a file that is not included in Comodo’s exclusive "safe-list" of over two million known PC-friendly applications knocks on your computer’s door. Also the Auto Sandbox Technology included in Comodo IS Pro 2011 tests programs in a virtual operating environment and thus ensuring viruses and other malicious software are isolated from the rest of your computer.
Comodo Internet Security Pro can detect and remove viruses that already found a way inside and also ensures real-time protection.
Other features like GeekBuddy live remote support is also included in this package.
To get Comodo Internet Security Pro 2011 for completely free for one year, first download and install CIS Pro from the Link given below. (Compatible with Windows 7, Vista, XP SP2)
During installation you may be asked to enter your email address to get license key to activate the product, though it is not necessary. If you opt, enter it, check your email account for license key and click “License” on the main window of CIS, enter the license key you’ve just got and activate it.
[Via : Comodo Forum]