Hi,
It's working now! I solve my problem after reading this topic :
www.opentelemac.org/index.php/kunena/2-w...-python-and-gfortran. In fact, I just add ".exe" in my "homemade" systel.cfg file as stated by Sebastien.
I must say that installation of version 6.2 SVN with open source compiler was not an easy task for me. I first tried with g95 as suggested by installation guide but without any success. I suggest to add the gfortran configuration in the "systel.cis-windows7.cfg" and also replace g95 by gfortran in the installation guide.
Long life to Telemac! Cheers,
Simon