community network website

I need a custom-built website in form of a social networking site. The idea is quite similar to the sites where there is a group that have service and other group that needs them, such as freelancer. Except that this site I wanted to be built has to present three different main categories. Each category would be a classified of other sub categories. The content/audience of this website wouldn’t be the one looking for work and others who need to hire someone to do the job; but rather a service and help are the two different side of the equation. The three categories will require a 2 different classified ads and one business directory. Every user need to create an account before accessing the classifieds and the directory. take in consideration that the two levels (classifieds) is only for individuals and free to join. As for the third level (directory) it can be for individuals or organization and it will be operated on a membership basis, this means that every member of the directory will be charged a fee to stay a member. Other social networking features such as videos, music, and blogs and forums, chat box, groups…are needed, too. Further details will be provided. Massa