If you are using Poser 4 (without Pro Pack) you have to make bum-files first before you can use the Mat-pose file. Load any object into Poser, open the material window and load a bump-file. It's a jpg probably with a capital B in the name like "V3BodyBHi.jpg". Poser will ask to convert it for you, click OK and repeat with all the bum-files. HTH