I want to get to grips with material room in Poser 5, but have no idea what I should plug in to what. e.g. I want to bring in a background picture someone has said that's it best to do it through the materials room as opposed to simply importing as a background picture. Any help or tutorials on the room much appreciated. Thanks in advance.

Oh, let the sun beat down upon my face. I am a traveler of both time and space ....Kashmir, Led Zeppelin