tree of improvements

Professionals you where?!

You have to be more specefic, what do you meen by treee of improvents? the tech tree? Each research is a single file in the gameinfo, starting with "researchsubject... .entity". You will need the gameinfo files for your version of sins as text files, you can seach for reference files to get the files for the newest version.

To make the mod, make an folder in the mod folder of the game (go in options in the game and then mods and press show modfolder or something like that) with the name of the mod. Then create a folder named GameInfo in the modfolder. Copy over the files you want to edit from the reference folder to the GameInfo folder and edit them with notepad or another text file editor (note that by text file I don't mean files like word files).

I hope this helped.

Thank you very much, now I understand a great deal ... But where to get GameInfo for Sins of a Solar Empire - Diplomacy v1.01 or Sins of a Solar Empire v1.15?

You're gonna have to unconvert it with something like harpo's converter or dekhranic's mod converter.

Many thanks to all! will experiment