Modding an isolated WoW

[NGVertigo]

Hello,

I'm looking for some way to make an isolated mod to allow me to test bringing in custom models.

Not trying to modify my WoW game in any way, I just want to create a little instance that I can run on my computer and be able to test and figure out how to bring in custom model designs I've made.

Anyone have any ideas or know where I might go to find out how?