This is an Anti-Virus program, it's easy to use and install. It is compatible with Windows Xp, Vista, and the newest windows 7. You can get the free version or you can use the better versions which cost money, but the good thing is that you get a 30 day trial on both of the higher end protection. This program is free to use and install. http://free.avg.com/download-avg-anti-virus-free-edition
