Our products are small, efficient programs with no demanding requirements. Network administrators can verify that our retail software will work on a particular computer or network by installing the free trial. Operating System Windows 8, 7, Windows Vista, Windows XP with SP3 (Not yet Mac-compatible, learn more) Screen Resolution 1024×768 or higher Internet Access Internet access is required for software activation. Disk Space 20 MB free space Miscellaneous Internet Explorer 6 or higher Symbol font, Times New Roman font, and Arial font. (These default fonts are installed with Windows.)