How do you unlock the other zombie maps in black ops?

On the Main Menu, alternately tap RIGHT and LEFT triggers (or hold the Space bar on a keyboard). After a bit, you'll stand up. Leave your seat and examine the back wall. A small black and white computer terminal can be found here. Approach it and it will ask for a password. Type in "DISK" then enter 3ARC UNLOCK using the on-screen keyboard in the "Central Intelligence Agency Data System."How do you unlock the other zombie maps in black ops?
There are multiply ways to get the maps, for the level Five (the pentagon level) you can beat the story on any difficultly and then on the main menu where you are sitting in the chair you can brake out of it my hitting the right and left triggers repeating till you brake out and walk over to the computer which is almost directly behind the chair you where sitting in and type in doa, this will unlock you Dead Ops Arcade which is a arcade zombie game and then you can also type in the code 3arc which will unlock both Five and Dead Ops Arcade maps.
If you beat the campaign on any difficulty you will get the map "Five", if you break out of the chair at the main menu (RT,LT,RT,LT, repeat) if you type 3ark in the computer you will also unlock "Five" and dead ops arcade, if you type "Dead Ops" in the computer you will unlock dead ops arcade.How do you unlock the other zombie maps in black ops?
when you are at the main menu press L trigger and R trigger alot go to computer (on left side) type in this code 3arc unlock (i also unlocked it)
To get "FIVE" beat the game on any difficulty to get dead ops arcade get out of chair (keep pressing R2 and L2) go to computer and type in DOA to get all the other ones get hardened or prestige edition or wait for map packsHow do you unlock the other zombie maps in black ops?
Or unless you dont want beat the campain, at the menu go to the computer and you can enter a cheat code to unlock the map. Not dead ops but the map "five"
beat the game or put the code on the computer u have there at the main menu there is 45 gamer-score at the main manu for breaking out of the chair
Beat the campaign on any difficulty.
press lt rt at the same time in the main menu then go other to the computer type doa