[away3d] add material in Prefab problem

[bandy]

If I add a material to a mesh the material is repeated on every
polygon, not once on the mesh as I would like. In the UV editor, the
mesh polygons appear to be stacked neatly on top of each other with
only the top poly visible, the material displayed in a rectangle
underneath. Do I need to manually reposition all the poly (1000) on to
the material?
I have looked for any available Prefab tuts unsuccessfully, sorry
about the newbie questions.
Thanks for any help
Lawrence