Scenario is mostly done, need a hand though

[Zen]

So,

I have a scenario that is mostly finished.
I need to know one thing though...

Is there anyway I can isolate certain computer players from having relations with other players.
This was very simple to do in Civ II, but I need to do something because I have two large "neutral" civs scattered over the map. They have no local power, but they have tremendous global power. I need them to just be able to hold their own (somewhat), but not be able to become a juggernaut.

So far, I have changed their government specs to make them weaker... but the big problem is their ability to communicate with all the other civs. Additionally, they have a better starting "map". So, when it comes to relations they do whatever they want and are able to throw the game out of whack.

If anyone has an idea or two, please put in your two cents.

thanks,

-Zen Blade