How to unlock the 2 classified zombie maps (Black Ops)?

Please help D:How to unlock the 2 classified zombie maps (Black Ops)?
- Beat the campaign.



- Press LT + RT repeatedly and move to the terminal in the corner. Press X and enter 'DOA' (Controls will be different on PS3, but try the shoulder buttons)How to unlock the 2 classified zombie maps (Black Ops)?
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How to unlock the 2 classified zombie maps (Black Ops)?
At the back of the room

There is a terminal / computer.



Activate it and type in 3ARC unlock



It will unlock it for you..



To get out of the chair, look down and press space continuously if you are on the PC



Or



On Xbox the bumpers continuously (Aim and fire I think).