By Poser Directory I mean that I put the morphs into a folder in my main/root Poser folder (e.g. C:Program FilesMetaCreationsPoser 4Morphs) By "d/l to it's appropriate directory" I mean that when you download any file you have the option for it to go anywhere... Say for example I was downloading a "square eyeball morph" for the P4 male. I would just opt to have it go directly to my "MorphsP4MaleEyes" folder. Saves a lot of aggravation later when you're trying to find it. Copy & paste would work just as well but I'm relatively lazy & prefer to cut out the extra step :-) The mtl file, (and Bryce users can correct me on this if necessary :-) stands for "material" and is used by Bryce to determine what files (texture,bump, etc) are to be applied to an imported object.