Hi to all,there's the possibility to find a FS9.cfg guide with all items explanations?Thanks Gianfranco

I haven't come across a guide, but I have seen a Configuration tool which may be of some use.According to the description:

FS9 Configurator is a tool for users of Microsoft Flight Simulator 2004. This tool gives the user access to many of the configuration files located within Flight Simulator. These include system, scenery, aircraft, saved flights, and graphics. The user can search, add, delete, or edit settings, plus maintain comments about each setting. FS9 Configurator also provides tools for changing aspects about Flight Simulator. The tools include Setting Contrail lengths, removing the Brake message, and (most importantly) setting the AI Taxi Speed!

You can download it from AVSim:http://library.avsim.net/download.php?DLID=67713

Gianfranco,I believe it is explained in one of the SDK's hereRegards,Jure