From a knowledgeable friend:

Computer TIP

Anti Virus Software

Everyone needs anti virus software on their computer check out the AVG Anti virus at: http://www.grisoft.com/doc/40/lng/ww. Top notch and it's free to download. This is the one I use and it's great. It also automatically updates your virus database each day - once again free of charge.

If you are not using anti virus software download this one, install and use the AVG Free Edition and get:

===> Automatic updates each day.

===> AVG Resident Protection.

===> AVG e-mail Scanner.

===> AVG On-Demand Scanner.

===> Basic Scheduled Tests.

===> Free Virus Database Updates.

===> Automatic Update feature.

===> Easy-To-Use Interface.

===> Automatic Healing of infected files.

===> AVG Virus Vault for safe handling of infected files.

I am not trying to promote Grisoft.com's product for personal gain. It's just that in my opinion AVG Free Edition has proven itself to be excellent anti virus software.