Database Driven Site

I am looking to create database driven web site: 1st page is login and create new act. based on login, user will be linked to buyer, or seller. Seller: they will enter information in a form about car they selling, will include, name, make model, milage, min bit, how long action is for will review the pages, upload pictures, and submit. Buyer: Will see list of all active cars, when you click on specific car, you will see pictures and more detailed information about a car, they will place? their only? bit, that seller will see in his admin page, and can accept the highest bit. Everyhing will be thru SQL server on go daddy site. I am not looking for any graphics, just strictly forms.