The %DLC% environment variable is not set at the system level. The Proenv utility can automatically set the %DLC% environment variable to the directory where OpenEdge is installed. It then adds %DLC%/bin to your PATH.
To start the Proenv utility from the desktop, choose Start® Programs® OpenEdge (or the actual directory where you installed OpenEdge® Proenv). You can also start it from the command line. Proenv opens a DOS window, sets the environment variables, and then changes the current directory to the working directory you set when you installed OpenEdge.