Well it is like a patch you cant really install it you have to have your own server and you can set it up to be a zombie mod best is to search for Zombie mod servers all of their maps start with...
you have to buy an application that lets you use windows on your computer such as boot camp(which comes with leopard) or crossover, but boot camp you need a windows install disc, so you might want to...
First, download and install AMX Mod X on your server. (link provided below) Then install the AMX plugin for the Zombie Mod you want. (link provided below) You can also try this zombie server:...
game will download them for you if you try to join online server and you dont have that map. Or if you are playing offline you can get the maps from fpsbanana.com and download maps from them or ESEA,...