Classifieds Ad website

Greetings Hello, I am looking for a developer to customize/modify & install [login to view URL] classified script, must look & work like [login to view URL] a classified ads website. I want a high end look and clean interface, still keeping intact all the features, functionality, email & admin abilities of Gumtree.com. Here is an example of a similar site created using the xzero script: [login to view URL] sections to display Banner ads and sponsored ads from Google, eBay, Amazon etc. Let me know how long this project will take, and the final bid for the entire project. I would preferably select individuals with previous experience in developing such projects Must be proficient in website design, Graphics, CSS, scripting, database, and programming knowledge, must show example of previous work, quote if you are confident of doing this job, and have done a similar site before. Send me your sample of such an online classified ad posting portals, Please do not send your other site portfolio... only classified ad portals you have done yourself. thanks