How do you change renderers in The Metal Age?

[keinesV]

I can run T:TMA, but when I consult the map, I pretty quickly get a D3D error. Something about texture something or other being different than it expected. Now that I think of it, I haven't tried it with my GF FX 5650. This error was being returned on my Radeon 9000, but in case it is a problem on my GF FX I would like to, for reference, know.