@echo off rem propddl.bat propage DLL to where it is needed. set app=mouse rem set dr = release set dr=debug Echo You must have freshly rebooted to unload the DLL or this %app% %dr% install will not work. pause copy E:\com\mindprod\%app%\native%app%\%dr%\native%app%.dll E:\sys copy E:\com\mindprod\%app%\native%app%\%dr%\native%app%.dll E:\com\mindprod\%app%