System requirements for CD-ROM issue (v. 21E (1998)): PC: 386SX processor or higher; Windows 3.1 or higher in enhanced mode with virtual memory (and DOS 4.1 or higher); 2x speed CD-ROM drive with MSCDEX ver. 2.0 or higher; 8MB RAM with 6 MB free hard disk space; VGA monitor (miniumum); Super VGA monitor with 800 x 600 resolution (preferred). Macintosh: System 7 or higher with Color Quickdraw (required); compatible CD-ROM drive with Foreign File Access installed (required); 8MB RAM and 9.5MB hard disk space; color monitor with 256 color display and 800 x 600 resolution.