nd on the FeynRules model wiki page,
<a href="http://feynrules.irmp.ucl.ac.be/wiki/ModelDatabaseMainPage" 
target="page">http://feynrules.irmp.ucl.ac.be/wiki/ModelDatabaseMainPage</a>, 
download the UFO (Universal FeynRules Output) tar file for the model, 
untar in the <code>models/</code> directory, and use as above.

<p/>
If you want to implement a new model which has not yet been implemented, 
you can do this either using the Mathematica package FeynRules (see 
<a href="http://feynrules.irmp.ucl.ac.be/" 