Boy. You are a newbie at this ;-). A .phi file is just a text file that lists out all the models body parts and the rotation orders(x,y,z) for them. Go to your Poser4->figures folder and look for a file called StdGimbals.txt and take a look at it. *Note how they are arranged (parent->child) and the order of rotation after each part. It looks very much like the hierachy window does in Poser. whithout all the icons and such. PhiBuilder is a simple little program that RoyRiggs made a long time ago that uses your .obj file to generate a .phi file automatically. Although you still need to arrange the body parts in it. Again. Just like you do in the Poser heirarchy window. I think it's still in the free stuff section here. You can make one by hand if you need to or if you are using a MAC. Just simply change the file extension from .txt to .phi. As new as you are to this process you'll need to know some key things. 1.)create a new subfolder and put your .obj file there before doing anything. 2.)make sure the top line of the .phi points correctly to the location of that .obj file. 3.) in the phi builder program. you simply click on a body part name. And drag it around to change it's location.Just like you would in the Poser heirarchy window. My tutorial is all pictures. You might wanna look at it. Just remember. It's simple but has lots of steps. Don't let it intimidate you. If you get stuck along the way. Just go to the character creators forum. And ask for help. Most people have at least one problem doing it for the first time. But it's always a simple problem to solve. So don't get frustrated and quit. Scott