Hello,
This is strange. I am not a specialist of Windows, but if the file telemac2d.bat is in the directory C:\TELEMAC\V6P0\bin and if this directory is in your path, Windows should run it, and it will call the perl command. Your problem thus seems to be that even a DOS command is not recognised, perhaps still a problem of path. I would suggest that you try to run the command telemac2d into the directory bin itself, it will not find the parameter file and will issue a message. Then you will know that it is indeed a problem of path. I hope this help. Regards,
Jean-Michel Hervouet