I was playing around with Irrlicht Engine (1.4), and i noticed a lot of things that are DC Compatable:
-Gouraud Shading
-Lighting
-OpenGL
-Particles
-and a couple other things
Things that may not be supported:
-Shadows. They are done by Stencil Buffers
-Shaders (NOT SUPPORTED by DC GPU!)
-SDL (Heard it was slow :P, 200MHZ of power won't Help!)
Someone with a BBA or something should try this, i have no clue myself how to do it, but would be very good!