please read my 6 part question it is 6 parts but its only 1 question. that was the only way I could post it I am sooo sorry for the inconveinence
I've only recently heard the term "interest groups." For a long time, I've thought of them as "lobbyists" or "lobbying groups," but I guess they are the same thing, different terminology!
Anyway, here are the Google results when I searched for interest groups government:
http://www.google.com/search?q=interest+groups+government&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA
The best of these seem to be --
http://en.wikipedia.org/wiki/Special_interest
(Broken Link Removed)
http://polisci.nelson.com/introlobby.html
Other teachers here may have more to add.
=)