Type: Antivirus Operating Systems Supported: Windows System Requirements: Minimum system requirements: Operating system: Microsoft Windows XP SP3 , Vista (SP2), Microsoft Windows 7 (SP1) CPU: 800MHz processor Memory (RAM): 1 GB Available free hard disk space: 1.8 GB free space (at least 800 MB on the system drive) Recommended system requirements: Operating system: Microsoft Windows XP SP3 , Vista (SP2), Microsoft Windows 7 (SP1) CPU: Intel CORE Duo (1.66 GHz) or equivalent processor Memory (RAM): 1 GB (Microsoft Windows XP) 1.5 GB (Microsoft Windows Vista and Microsoft Windows 7) Available free hard disk space: 2.8 GB free space (at least 800 MB on system drive) Software compatibility: Internet Explorer 7 and higher Yahoo Messenger 8.1 and higher Firefox 3.6 and higher Thunderbird 3.0.4 Outlook 2007, 2010 Outlook Express and Wi...