If your company has a bunch of store locations, please don't hide that information behind a search form or a POST. If you want your store pages to be found, it's best to have a unique, easily crawlable url for each store. Ideally, you would also create an HTML sitemap that points to the web pages for your stores (and each web page should have a unique url). If you have a relatively small number of stores, you could have a single page that links to all your stores.