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lol...i've tried that...but it doesn't recognise when i create a game (both are the same version, so that's not the problem)

in system preferences, what do i have to activate to make it possible?
 
how do you mean by that?

i've created a computer-to-computer network with one, and joined the other...i really have no idea what's going on

It should work then. Try disabling any non-default network systems like Firewall. But i'm not familiar with them, so can't really help you on that. :eek:
 
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