This is DMAKE version 4.12 compiled for Win32 using MS VC++ 6. For information on how to use DMAKE, see man\dmake.nc. DMAKE needs a set of startup files that are located in a subdirectory called "startup" where DMAKE.EXE lives, or in a directory specified by a DMAKEROOT environment variable. So, to install it, just copy DMAKE.EXE and the startup subdirectory to some location on your path.