Fistly, welcome to the Poser forum. This is a fairly common problem when you're new to poser so, take a deep breath and here goes OBJ files usually go into the geometries file. They are sometimes listed with an RSR (with exactly the same name) which also goes into the geometry folder. CR2 files (and identically named RSR files) go into library/characters/any folder. HR2 files go into libraries/hair/any folder FC2 files go into libraries/face/any folder HD2 files go into libraries/hand/any folder LT2 files go into libraries/light/light sets PZ2 files go into libraries/pose/any folder PP2 files go into libraries/props/any folder Hope this helps Paul