Please help i have a problem modding COD

i have cod WAW and i am trying to install mod Nazi zombie maps such as dead sand and subway but now that i have patched the game the mods no longer apear in the mods section

all i get is 1 mod called Custom_maps which i have no idea what it is but i cant run any of the maps

i have put the mod maps in the App data Activision folder i have also creater a mod folder at the install directory and nether works all i have now 1 mod called Custom_maps which is getting me nowhere

help would be much apretiated

thanks :)