don't buy any anti-virus. just go to - www.avast.com and download their home version of anti-virus. great anti-virus software and have been using for more than a year now with no problems. it updates automatically everytime there is an update. best thing it is free, and considered by many as the best anti-virus these days. Remember orton slows down your computer signifcntly. Avast will however slow down your internet for first 5-10 minutes of your complete computer boot.