In Poser five, to apply the same shader to all elements of a figure, right click on the Poser surface and select all, then right click again and apply to all, then click ok. NOT recommended for doing with people. Although MAT files are very easy to use, in P5, ANY shader on a figure (that is, anything set up as materials in the material room) can be saved to the materials library. YOu can apply any shader you create to any surface in poser 5. To change the mouse textures, double click on the texture name in the node that holds the texture you wish to change, (usually image map) and then navigate to the texture you wish to use.