i stumbled on this and thought it might be useful to someone using fortran. its from the glut win32 distribution readme-win32.txt.
Bill Mitchell has put considerable effort into getting GLUT to work with different compilers for
Fortran 90. He indicates that you should copy the f90glut.h file to your $(MSDevDir)....\VC98\include\GL directory. Then, just build GLUT as usual. The Fortran 90 interface, f90gl, can be obtained at http://math.nist.gov/f90gl and contains installation instructions and usage examples.