Some possible computer generated ideas:
  Shown above are a few views of a computer generated bearing.  The goal now is to assemble a molecular bearing using these "blueprints."

Here is a computer simulation of what a gear might look like.

Above is the worlds smallest guitar.  This 6 string guitar is 10 microns!
*Click on this photo to visit Cornell University's website. The engineers of this tiny instrument.

In this image the artist shows millions of nanomachines patrolling the human body, and attacking viruses.

here is a diagram of Leo 982 SEM.  This is one of the many tools used to manipulate individual atoms.
*Click image to view Zyvex's web page.  Using tools like this, Zyvex hopes to make the first assembler