This is the recommended way to install MAX 3.1. 1. Create a directory called ASSEMBLY, and a subdirectory under that called MAX31. 2. Copy all program files to C:\ASSEMBLY\MAX31, and all example files to C:\ASSEMBLY. The file INSTALL.BAT should do these 2 steps for you. 3. If your AUTOEXEC.BAT file has no PATH statement, then add the line { PATH = C:\ASSEMBLY\MAX31 } to it. If it already has one, then add { ;C:\ASSEMBLY\MAX31 } to the line. Put your source code files in the ASSEMBLY directory, and work on them from there. The PATH will allow DOS to locate the program files which will not show up in MAX's directory when you run it.