How do you play 3-4 players on nazi zombies? (with ps3 not online)?

im trying to play with more people but i dont want to go online for it.How do you play 3-4 players on nazi zombies? (with ps3 not online)?
i think you need 2 ps3's to do this by playin system link



some how obtain another ps3 and hook it up to a tv in a different room or something then get a cable to connect the 2 together and then set it up from thereHow do you play 3-4 players on nazi zombies? (with ps3 not online)?
go steelers
I am pretty sure that there is no other way of playing nazi zombies without being online. Because the nazi zombies mission was created for the purpose of the co-op mode and you must be online to play co-op.

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