Due to an ordering error the RBBB Arduino kits may come with an axial 0.47 uF capacitor instead of a radial one, here's how to install it. if you need more general instructions on how to build the kit go to either http://www.moderndevice.com or http://www.wulfden.org and download their PDF instructions for the RBBB.
Installation of the 0.47 uF capacitors should probably be saved for a last step in the assembly process, but at least make sure you have soldered the surface mount resistor that goes just below the capacitor.
All of the photos below show a de-populated board for clarity, but be sure to heed the warning above.
Fold the negative lead over as shown
Insert the capacitor into the board NOTE POLARITY!
Solder and enjoy!