I believe there is no way to do this yet. You need to bring your objects into the center of world space before you export (ie. the centre of the grid).
That would probably mean that your object's pivots are located at the origin of the grid. That is the problem with the option ( u have to "manually" set the objects pivots to behave as expected )
just watched the first chapter of the dvd. looks like it will be very promising. learned a bit from it already with using the grids in photoshop for reference plane setup.
The round blockage element on the lower level seems really out of place with the rest of the grid structure. Try making it more of a square element like the rest.
afair e_defaultmaterial changes all textures to a grid texture, but you can change the texture to white by replacing the original (cant remember where it is though, sorry)