*** Warning It is a version *only* for MacOS X. If you have prior versions of the MacOS (9, 8, 7...), it will not work. No planed version of GeneWeb for these systems. --- Download gw-4.01-mac.tar.gz Then launch a Terminal and type: tar xvfz gw-4.01-mac.tar.gz If (only if!) you have a downloading problem: Launch a Terminal and type: wget http://cristal.inria.fr/geneweb/gwmac tar xvfz gwmac Normally, you should then have a directory named GeneWeb-4.01. Go to this directory and read the file README.txt.