Encore Software Family Tree Maker 16 Collector's Edition by Encore- Windows System Requirements - Windows 98SE/ME/XP (Home & Pro) SP1 , 333 MHz Pentium, or compatible processor, 128 MB of memory (RAM), Super VGA (800 x 600) video adapter (1024x768 recommended), Hi-Color (16-bit) color quality, CD-ROM/DVD-ROM drive (for installation only; to use the CD/DVD back up features, a CDR/CDRW or DVDR/DVDRW is required.), 150 MB free hard disk space , Microsoft Internet Explorer 6.0 or later. (A full install package for IE 6 is provided if your system does not already have it.)