Flash database search application... please help!

I have a list of distributors for my company. They are companies from all over North America. This list is in Excel and I need to create a flash application that allows the visitor to type in their zip / postal code or city and pull up all the companies in a 100 mile radius of their location and display all the results on the flash application while pulling this data from the excel file or if I can have the data transferred to another file format to make it work I can.