first step, find your latest rebellion mods folder(usually under /my documents/my games/ironclad games/Sins of a solar empire rebellion
2 in the mods folder, create a NEW folder and name it for your mod, eg 'forbidden bonus'
3 inside the newly created mod folder, create a new folder with the name 'GameInfo' (note this name MUST be exactly the same as displayed
4 copy the galaxyscenariodef.galaxyscenariodef from the modified version (old form) into the folder, then rename it so that you can copy the stock galaxyscenariodef from the game folder OR the reference files (there are a couple of different suppliers here in the forums)
5 with a program like notpad++ (that can open AND display/compare two files at a time) open BOTH the renamed and stock galaxyscenariodef.galaxyscenariodef, and going through the entire file look for the section that has the planet bonuses then copy the bunuses that existin the renamed, but not in the stock, and after you have copied all the bonuses over to the stock, then check the count on the lbunus section and adjust it up by the number of bonuses you added (note if you remove lines then decrease the count)
hope this helps