This is useful for custom mesh textures if you don't want to create brand new 3-d models of the AIs.
To use this, you must know the mesh texture(s) that the AI is using. Put the texture file name (xxx.gif) from the AI in the "texture in model" section (must include the file extension.). Then put in the texture file name that you want to replace it with in the "replace with" section. Not available with the Thief Gold version.
Property Name: MeshTex