You can also take the original pose file for the figure you made the texture for and open it in a text editor, I use PFE, I don't know if it works on Mac or not, but a good text editor, not note pad :P 

Change the references to the original pose files textures to where your textures are located and save it as Mat Blue Dress.pz2 or whatever name that describes the texuture for the figure.

-DR