Help with textures

Hey peeps,

First off all, awesome work on some awesome mods.

I thought i would create a mod myself with certain models. Now i can get the models in the game but they are black without there origibal textures. Its like the mesh materials aren't loading or something. I am all new to this. I have been trying to look for a answer but i got more confused. Can someone please point me in the right way so i can make a awesome mod. xD