If you're trying to expand your customer base, there are a couple of websites that you should know about.  The Buy Illinois Network was established to promote business to business sales and training within Illinois.  I checked it out and was able to get my own business listed pretty easily.

I also joined LinkedIn recently.  It's a social networking site for professionals.  I signed up, and the system was able to upload my contacts and automatically send a message to each of them who was already signed up on the site.  I instantly had a network of twenty or thirty people.  You can then use their networks to make new contacts.  You can also post a pretty extensive description of yourself, your career, and your business on the site.  Some of the people in my network have some really good connections to people with whom I hope to work in the future.