Security for your OS

There is no reason to pay for security applications for your PC. Uninstall your Norton, McAfee, etc. and install these free alternatives. They use fewer system resources and save you money.
• Avast Anti-virus Home Edition - This is a great anti-virus program which includes tons of features and options. It works well and provides automatic definition updates. What more could you ask? If you don’t like Avast for some reason you can try Avira AntiVir PersonalEdition.
EDIT: I now recommend AVG Free once again. They had “discontinued” version 7.1 and told people they would have to purchase the full version if they wanted to keep it. But now they’ve released the free version 7.5 so I’ve switched back and recommend you do so as well.
• ZoneAlarm Firewall - This firewall isn’t perfect, but it’s the best I’ve found for free. Even if your router includes a firewall you should run this on each machine to ensure that you have “defense in depth“.


• Spybot Search&Destroy - Complete spyware protection system which will find and disable spyware as well as prevent it from even loading. Also includes a system startup manager that allows you to disable all that crap that is slowing down your computer whenever you reboot it, like MS Messenger and Apple Quicktime. (Use ProcessLibrary.com to help decide what to remove.)
• Spyware Blaster - Actually prevents spyware and other malware from even being installed on your system. The free version is completely functional but you need to manually tell it to update the definitions periodically which is no big deal.
• Startup Inspector for Windows - A program with a singular purpose. Allow you to research and disable software that is automatically starting when you reboot your system. Includes a great “Consult” feature which tells you exactly what most items are.
• Windows Defender - Microsoft’s version of SpyBot isn’t quite as comprehensive, but I run it as well in case one picks up something the other one missed. It’s free as long as you’ve got a legal copy of Windows.if not then goto , www.makeyouexp.blogspot.com , read and enjoy !!
• McAfee SiteAdvisor - This plugin for IE or FireFox will proactively warn you of sites known to have spyware and other nasty things.
--------------source from google and msn