you can use crazy bump to play with then know, it has excellent preview, look for the free version. In the meantime you can still crank them out ready for when fpsc dx10 is out, in the meantime Im looking forward to seeing your post updates on this pack.
note, would be good to see segments of different shapes, ie not all flat walls, also walls with depth, not all 10 units deep.
Also some walls with greater size than 100 units long, people dont realise, but all those segments take up comp power, people think they are magic and it doesnt count you have a room made from 100 cubes, it does.