Just to add on if you can't or don't have the time to write a letter.
The AFA has written a standard letter that all you have to is to sign it
and get 3 other people to sign a copy and mail it in.  Getting a 100 of
the same letter from 100 people is better then no letters
 
http://www.ferret.org/news/2005-08-28-a.htm  (third link down)
[Posted in FML issue 5037]