I have posted a question about Python.net and Boa Constructor. Thanks for the answers. I did progress: I had to recompile the python_runtime.dll with C# and now it is working under Windows. My question is: how to do the same under Linux. I have MonoDevelop installed, is it possible to use the same way ? Thanks a lot Serge -- J'utilise la version gratuíte de SPAMfighter pour utilisateurs privés. Ce programme a supprimé1566 d'e-mails spam à ce jour. Les utilisateurs qui paient n'ont pas ce message dans leurse-mails. Obtenez la version gratuite de SPAMfighter ici: http://www.spamfighter.com/lfr