How do you bring the ladder down on zombies black ops?

now this was not my idea it was my Friends so don't go and send threatening letters saying that's wrong you idiot!

so my Friend said that to get the ladder down you need to use the picture Easter egg and say the right ones in an order. unfortually

he doesn't know which order because HIS friend told him about it (plus he did not tell me if you're to do it before or after you turn the power on!) so if you find out how to do it just improve this answer and send it to me.its all wrong there has to be 4 players and they all teleport into the pack a punch machine room and after each one gets teleported into another one there will be a tape in each room and when each guy gets his tape and then when you teleport into the spawn room and then you just teleport to the pack a punch room and then you press x with the projector then the ladder comes down