Thanks... I think I can glean from the code what should happen, but I'm getting a stack of syntax errors. Could you walk me through the steps to running the code? Other than writing some simple MEL scripts, I'm new to this kind of stuff and think that's where I'm going wrong. How do I call the function with the desired value for the variable brickWidth?

(Phopojijo... "why its necessary to have the walls made like that? (all I see are wasted polygons)"
I'm experimenting with adding different textures per face, and randomizing the vertices slightly to get something bumpier. It may be a dead end, but it's good learning experience, if only to find out what ideas don't work and why.