Hi,
I want to connect two Ps3 with a crossover Lan Cable. I have the hope that i can play then with 4 Players. Is that right?
(2 Ps3, 2 times Splitscreen, = 4 Players)
You can't do straight up LAN play in GT5. You need to be signed into PSN (though if you have multiple PS3s connected to the same router, outside of having to sign in it works basically the same as a LAN setup).