A freeware antivirus install it and forget about viruses, worms and spywares. All you have to is to register this version free from avast.com to get your number via your email, It will do automatic updates and other activities for ever freely for you.
you can download this freware antivirus by visitring the following download page:
http://www.avast.com/eng/download-avast-home.html#DownloadAvastHomeEdition
you can download this freware antivirus by visitring the following download page:
http://www.avast.com/eng/download-avast-home.html#DownloadAvastHomeEdition