Create a CSV XL import for my google map listing website

I have a working listing website and need to add a import feature so I can Add listings from a XL file into the database One listing can belong to many categories Field names to import are: name address telephone fax mobile email website description approved cat_id ( or category can belong to multiple categories ) is_stockist you can see the site here: ( replace [DOT] with a . ) adrenalinwetsuits[DOT]com/_storefinder2/ The listing site is a Google map site, when a listing is added manually in the back-end add listing form, the longitude and latitude is created from the address field automaticaly, the import will need to be able to get the longitude and latitude from the address field as it does when you manual add a listing. Perhaps a separate FIND LOCATIONS button can be added to go through the listings and get the longitude and latitude. The job is complete when I can add listings using a XL form that can belong to multiple categories and the listings have the longitude and latitude correct from the address in the address field. See images for database structure and more details. Mention "HGB" so i know you actually read the brief or you will be ignored :) the PHP add store and edit store is attached also for your reference