It is recommended to use the latest version of ZombieHorde which can be found from 

                     -x-x-x-  www.zombiehorde.com  -x-x-x-
                       
 
                       
If you still wish to use this older version, here's what you going to have to do:

First install 0.3.0 and after that, throw the patch 0.3.2 in and it should run OK



 Good luck!