After building with cabal just copy the tableaux.cgi executable to some cgi-bin directory of your web server (e.g. /var/www/cgi-bin or ~/public_html/cgi-bin). Make sure you the web server is setup to execute cgi binaries and that the read-exec permissions are set. The binary is self-contained so it can be simply be moved if necessary (no external data files are needed); it also does not write any files while running. Pedro Vasconcelos, 2010