Making money through a business directory

Hello, I am planning to start a good business directory for my country .. i already have more than 100,000 facebook fans and now want to add a business directory to it .. is there good money in it ? what is the best wordpress or other scripts i can use ?

thank you

Business Directory and a Facebook Page ? i see no link
you want to say these likes are businessmen in your country and they might be interested in buying premium spots in your directory ?