I have a Classifieds site and I need someone to create the database of classified directory. The site is focused to US Businesses. I need a directory of REAL businesses like carpenters, fitters, electricans, etc. I'm sure if focused to real businesses, the database will be huge with atleast 20 categories and 5000 sub-categories. Please contact with details how can you get all the data and prepare this database for me. Please also mention the time duration 'how long would you take to complete this project".