Quote from WildWayne
Aha! Custom mob spawner was to blame. Thanks for the info Tenshi, but i had downloaded Omen's modpack and they spawn with the textures. I meant they dont spawn at all. But i figured it out!
Custom mob spawner seems to make it so that the maids do not spawn naturally, other than that it works fine.
That's really weird... I'm using Custom Mob Spawner (in concert with Mo'Creatures) and I am seeing maids spawning.
Also, the thing with the configuration file is that in my experience for some reason the mod always overwrites the config file with a default version every time that Minecraft starts, so any custom settings I tried to set in it (boosting the spawn rate, etc.) kept getting overwritten. I worked around this by setting "Immutable mode" on the file, which is sort of like a "super-duper read-only mode" that prevents *anything* from writing to or changing the file. In Linux, you do this by running the command "chattr +i (filename)" On Mac OS X, it's "chflags schg (filename)" Windows probably has something similar, but not being a Windows guy I have no freaking clue what it is or how to activate it.