Suggested system configuration: The software was developed on: Pentium-266 with Windows-95. 32 MBytes ram 17 inch display using 1280x1024 raster points/256 colors. Minimum system requirements: System running Windows 3.1 4 MBytes ram - 16 MBytes recommended depending on how many applications you have open, you may obtain the message "Insufficient Memory for Application". Closing unnecessary applications or increasing the virtual memory under Control Panel - 386 Enhanced can remove this problem. Hard Disk - 20 Mbytes + lots of extra depending on use VGA graphics card The software will work on a 640x480 display, but if possible, configure your display to use more. A 14 inch display works well with 800x600. If your display uses only 16 colors, the graphics plots will suffer. At least a 486x33MHz processor with math co-processor (a 386 will work but is too slow for any substantial work) Black & White graphic output can me made to any Windows printer. A laser printer with minimum memory (512k bytes) will work but you may need to remove the border from the plot. Color graphic hard copies (does not yet work) I currently no longer have the ability to re-compile the 16-bit version that works under Windows 3.x. Hopefully, everyone will be soon moving to Window-95 or Windows-NT. You comments are welcomed.