UW Mapping tutorial

Hi all. I''m working on a 3D object loader that can handle texture and material data. I mainly work on the 3DS file format but I have a lake of information regarding UW mapping. Is there a tutorial planed on that work or is there is someone that could give me good link about how to handle UW mapping coord in OpenGL (takink into account of mapping deformation like scale, rotation and other) ? Very thanks. Contact me at: jbuyck@club-internet.fr