Join (2) Materials into (1) Object

What is the best way to combine two separate polysurfaces, with two separate materials added into one polysurface? I am using a viewing software called Fuzor and when I group materials and import into that software package, Fuzor doesn’t respect the group. So if I move my group of objects they ungroup and fall apart.

Hi Eric - there is no way to do this and keep the materials separate.