[CentOS] How to extract one file from rpm using yum?

Thu Jan 31 15:55:37 UTC 2013
Robert Moskowitz <rgm at htt-consult.com>

I want to get the original version of /etc/clamd.d/amavis.conf from the 
amavisd-new rpm to get the defaults to submit a bug report.  I could not 
figure out how to do this, so I did a reinstall, but it did not replace 
this file (whatprovides says it comes from this rpm).

Is there a way to extract just the one file, and better yet, place it 
elsewhere than its regular destination?