I have some trouble with the installation of FFTW3 on Windows. I did what they said (http://www.fftw.org/install/windows.html) but it not working. Where should I put the DLLs or Lib files? How can I call the subroutines in Fortran? How can I link those subroutines to my Fortran program(on command line with ifort 9.1 or in Visual Studio 2005) ? Please, help me. I have been trying for few days.