Database driven website

Need help implementing a basic database into a website. I've already written the website itself, and have also already designed and populated the MySQL database. What I need is for the website I made to have two database pages. One page will allow the user to run queries of the database (a few somewhat structured, commonly used searches; as well as a fully customizable search). The other page will allow a privileged user to modify the database (add, delete, edit entries). The website itself and the database are already written, I just need you to plug everything in.