There are two versions of the program: Amazw31.exe - for Windows 3.1 or 3.11 Amazw95.exe - for Windows 95 and NT. The program SETUP.EXE automatically creates icons to access the right file from the CD-ROM. No changes are made to the configuration files of your computer. We recommend a 256 color display for better performance. Tech support is available through the Internet. Visit our web site at http://www.tbaiana.com/perdido Good luck!