Cod black ops zombie glitch

Ok, first you need to select the map five. Once it has loaded, go to the window on the opposite side of the two speaking stands. Then go to the window closest to the door you can buy. Next, break the whole bottom glass of the door with 2 knives. Finnaly rebuild the barrier and jump on the corner of the two pieces of the wood, then jump on the door, once you get up here jump in the table , then sprint jump on the big table and enjoy!