Apply taxonomy to content types based on location in Drupal 5.7

We have a website running Drupal5.7 on a L.A.M.P. STACK It contains a database of businesses that is added to frequently by the admin and eventually will be added to by users. We have a need for a taxonomy vocabulary to be created that will contain the names of all the lakes as the Terms. THEN... We need these terms applied to the 59,000 businesses in our directory. Currently our Drupal site creates list of these businesses based on proximity to lakes. We want the lakes tagged with the taxonomy so that the proximity search is not repeated each time a page is generated. ## Deliverables You can visit the site now and see our directory. [login to view URL] Choose a state Choose a lake Then you will see the list of businesses. Select a new business category to see more businesses. These lists are being generated by zipcode calculating. You may or may not want to use your own zipcode calculator to decide which businesses should be tagged with which lake term.