peakwin311.exe is a self-extracting file that contains all files needed to install the 16-bit version of PeakSimple for Windows 3.11 or Windows NT. Copy this file to a temporary directory (also called "folder"), and then run the filename, using File - Run. The file will extract the files needed for installation. Then File - Run the install.exe file, and the installation program will begin. When this is done, when you launch PeakSimple, you will see a message indicating that you are running version 2.08.