This anti-virus is one (in my opinion) of the better software packages out there!!! And it's free.
AVG Anti-Virus Free Edition Award-winning antivirus and antispyware.
Real-time safe internet surfing and searching.
Quality proven by 80 million of users.
Easy to download, install and use.
Protection against viruses and spyware.
Compatible with Windows 7, Windows Vista and Windows XP.