dealer locator

I have an excel document with inventory of dealers and I need a USA states query script to a database on asp.net website. I have an image, with all the states, these states have links, for example if you click Arizona it gives you webroot plus: [login to view URL] Here AZ indicates Arizona. So the project is quite straight forward: Create the database and import the excel document. Create the page to query the database for dealers in different states, if user clicks Arizona, he should get dealers in Arizona. The url that is used to quer the database(AZ in above example) obviously needs to be protected from database injection. Protection against XSS attacks and so on should not be needed since input to the database comes only from owner of the website so no need to strip javascript and html tags from extracted data. Simple demonstration queries of how to add, update and delete dealers from the database is also required for the owner to maintain the inventory of dealers.