Finish/repair/upgrade aspdotnetstorefront site

Need to upgrade/complete/repair aspdotnetstorefront site that was never fully functional. Content management system appears intact. But nothing much works with forms, database and payment. Tasks... - switch from using access to ms sql - add validation and to all forms - ensure form data gets into database, gets emailed and is viewable in back end - hook up interface with existing merchant account via authorize Site can be viewed here... [login to view URL] ======== Some additional details... The site "sells" two things: memberships in the organizations, and donations to the organization. The forms are used to gather the information required to make those transactions. That's it. The site was never completed. The front end is functioning, but the backend needs... - form validation - database storage of the form variables - an ecommerce connection to [login to view URL] The site is using an Access database. If that is sufficient, we will stick with it. If we need to go to a SQL database, we will.