I can say you haven't seriously searched the mod you want before asking, as some guys have been working on this mod before you posted this thread. And now its out. There is however, only Chinese version available so you gotta get Chinese localization doc installed on MoW in order to read the mission statements otherwise they are all undifined codes.
Zombie Mod
Features
-Co-op is available
-modern weapons including laser gun with lasersights
-Regular zombies, Flying zombines, flame zombie, Super running zombies, giant zombie, zombie dog, etc
-virus infection. health men mutant into zombies if infected by other zombies.
-over 4 game levels.
-bla bla bla...
Images
Links
read more:
http://game.ali213.net/thread-2902832-1-1.html
download:
http://d.namipan.com/d/d7afa2e45e935...5a1c18603fb101
I uploaded it to FileFront as a mirror:
http://www.filefront.com/14772721/zombie.rar