GridModeler can export a smoothing bump map, but it can't create bevels or radiuses on cubes. Though, VueTools can bevel and radius cubes and cylinders, but not for every instance of a transparency map. For that, your best bet is a bump map.

Here's a video link which will get you started in understanding how GridModeler works. This is just for Standard Mapped wireframe objects. There's also a lot which can be done using the GridModeler HyperTexture primitives, which are not included in the video, but are evident in the images above. Also, there's many things which can be done with Parametric mapping as well. Those videos hopefully to come soon.

Be sure to click the FULLSCREEN option for this video.
chippstips.blip.tv/file/475564/