Finding someone to sell a company?

My company has spent the last year developing a framework for creating games on Facebook, Myspace, and Twitter. While we had originally planned to release the product to the public and take a percent of the revenue, we have realized that we can make more money by selling the application to a funded company entering the social gaming space. Our problem is we don't have many other contacts in the social gaming space and would like to find someone to manage selling the company for us (in exchange for a percent of the sale.) Where can we go about finding someone with the skills and contacts to sell a product like this? What experiences have others had trying to sell a company that we can learn from?