I represent a team of designers and developers with expertise and experience in Web designing, HTML, CSS, PHP, AJAX, JQuery, Wordpress and MySql. We have developed many complex and extensive custom sites of varied extents and complexity. I have read your requirements and am confident of delivering well. However I need to see sample CSV file and the current import script so that I can assess scope of work involved in the change and can confirm/ revise my bid accordingly. I ensure a very thorough job and look forward to hearing from you. Please see PMB for some of our PHP, MySql projects.