Wish to build a advertisement system or enhance the one I have to be more granular. Real estate posting site located at www.2bidhome.com. Currently advertisers are listed constantly on the right hand side. I wish to make it so that an advertiser can list by region. So that a real estate agent in Chicago can place his advertisement to show when a user is looking in the chicago area, or maybe just by state. Depending on the cost, would like something that would go as far as by county, but realize the more granular the more costly. Take a look, Im open to ideas.