How to change the Barrens trees

[Naralesca]

Okay, so I'm working on a Barrens change, but I'm kinda stuck, because I can't seem to change the trees, and I don't want to leave them be, because they don't really fit. So, I was wondering, how exactly do you change the trees? Here is what it's looking like so far: Thanks in advance.

[kody_]

get WoWmodelviewer find where the barrens trees are, then find the trees you want to replace them with, then replace them, also im liking that tileset alot