I have this problem: I export DXF from Rhino to bryce; I do some shiny metal, and it looks good. Now I want this to go on my model. Can this be done with RHino? I tried with PS and I could never get it with the same size. hlp??

Bryce materials can only be used inside Bryce. One thing you might try though is to apply the material you want to to a gigantic square, render it, and use the image as a texture. Certainly isn't ideal, but a possibility for materials that aren't height sensitive and the like.