90701 Car Classified Search n Sell

I am looking for a very simple and easy to use car search and sell site. Like auto trader, but i want this to be free and simple. If it could resemble AutoTrader by means of usage that would be great. I need users to be able to post up their vehicles for sale, and upload up to 4 pictures, then fill in info: (Make Model Year Miles Vin ect) then an area for a discription. Then i need the searcher to be able to search for those things listed in the discription. Make, model, state and city, from pull down menus. Then miles, price and year range should be in a _____ to _____ format, for the user to fill out, along with a blank box for users to type in things they want to search within the sellers descriptions, such as "clean title, damaged, cheap", what ever they want to type in. If the results could be displayed in a Autotrader fashion, with preview pictures on the left hand side, then the basic info listed and about 25-50 listings per page, then if clicked on bring up a page showing the full discription and all thumbnails of the pictures available for viewing, and contact information. Like i say, simplicity is the key. Also if it could be worked in to add an adsence code after the first listing of the search results that too would be great! Also if it could be made so that the users listing gets deleted automatically after some amount of days, say 30 days that would be awesome. In an admin. panel the selectible "models, makes, states, and citys" could be chosen and editied that would make the job easier, and less work for the programmer having to enter all of those in, also the ability to delete certain listing numbers that are either fraudulent or for some other reason need to be deleted. You also only have to be logged in to make a car listing on the site, but not to view the site. I look forward to working with you on this project and i am free to answer any and all questions you may have, thanks!