Custom nazi zombie maps help asap please help 10 points if you do?

here is the. situation i have world at war for pc and i have downloaded all 7 patches. it looks like they came with one custom map called ravage. when i start the game and i go to mods none of my maps are there in solo or multiplayer. iv downloaded about 6 maps and have them in my mods folder but none show up in game. i have show hidden documents on but still no luck maybe its because i get to my world at war folder by going /harddrive/programfiles(86x)/activision/… and not the appdata way thing. because my appdata has only 2 things in it a longtail video folder and something else. i run windows 7 if some one could help me ill give them as many points as the need thanks alot