XFile(EX9.Geometry Load) has an output called TextureFileName where it returns strings/filnames referencing textures associated with the model.
FileTexture (EX9.Texture) takes strings/filenames and loads the corresponding textures. its output needs to be connected to the same effect you connect the mesh to.
note that the strings/filenames may be absolut or relative. if absolut, the texture files should really be placed where the absolut path points to, if relative, note that vvvv will resolve those relative to the path your current patch is in.