Internal Revenue Service - www.ustreas.gov
Welcome to the Treasury Department. You are entering an official United States Government system.

Better Business Bureau - www.bbb.org
Our mission is to promote and foster the highest ethical relationship between businesses and the public.

YaHoo's Business Resources - dir.yahoo.com/Business_and_Economy/Business_to_Business/
A list of Business categories in Yahoo.

Inc. Online - www.inc.com/
Where to start and run your business.