Using FFTW 3.0.1 VisualStudio 6.0 Project file 1) Install VisualStudio 6.0 and Intel C++ compier 8.0 2) Unpack fftw3-vc6.zip 3) Open fftw-3.0.1\win32\bench.dsw 4) Do "Batch build" for all configurations. 5) The library files and benchmark executables are created in the directory where you unpack fftw3-vc6.zip, next to "fftw3.h" Franz Franchetti