I want to make business listing site with vbulletin forum software. What I need is to add aax based drop-down select list of countries, cities and town. During posting new thread (in my case: New business) user select his country, next drop-down select list should automatically produce list of cities of that country and same like for towns then. After posting, these factors should also includd in search so users can search in specific area. Hope I am clear in my point.