> Ok i get that... now tell me how i add that to a certain map?

So long as rules.ini is within the game directory, any changes you have made should affect the entire game, whether in the single-player missions, or skirmish games. For multiplay, all players must have a copy of the rules.ini you are using.

If you are playing Yuri's Revenge, you want rulesmd.ini, not rules.ini