Question: How do I set environment path and compiler linkers for MATFOR in Lahey Fortran under .NET environment? Answer: Include Path:Under Visual Studio.NET, select Project ->Project Properties..., under Fortran folder, select "Module/Include Path". Set the following directory for "Search Path for Include Files": \include\lf For instance, D:\Program Files\AnCAD\include\lf Set the Compiler Linker: Under Linker folder, select "General". Set the following directory for "Additional Library Direction": \lib\lf . Select "Command Line". Add the following libraries in "Additional Options": fml.lib fgl.lib matfor.lib