Actually, forget about D-Box as a frontend. It must have its own config file overriding the one in DosBOX, because it keeps the window too small. Which means typing commands into DOSBox when it opens. Mount C C:\xy #(or whatever the name of your Xy4 directory is) C: #(makes the computer treat XY as the C: drive) editor.exe That will give you the DOSBox window you configured. fullresolution=1024x768 gave me fairly large, non-crashing window centered on a black screen JP