@Ouranos
I'm using Immortal Throne but it *should* be the same?
..\Titan Quest\Database\
Creatures\pc\female
Definately works for Immortal Throne. By default the blue folders in the structure above won't exist, so you'll have to create those. Go to the newly made 'Female' folder and put the three files in there.
All you have to do after that is load up the game, make sure you have a white dye equipped on the female character and it should update the mesh and skin.
I've literally only been editing .tex files for 2 hours now and have already made a pretty nice skin for the old female mesh. Look foward to working on the newer one.
