Bukkit

What steps will reproduce the problem?
1. {REAL PROBLEM} Add a Config where people can configure if they want other mobs
2. {COOL IDEA} Add a Zombie spawn chance like baby and Giant chance
3. {COOL IDEA} Add giant special abilities

What is the expected output? What do you see instead?
Ok so I am aware somebody probably knows how to do this but every time I try to spawn a villager it spawns a zombie i know that this is because of the (Only Zombies) But how do I let Villagers spawn I need traders!!!!!
What version of the product are you using?
The most recent as of today

Do you have an error log of what happened?

Nope

Please provide any additional information below.