Application Design Layout

We have five applications each with about 3 pages currently the interface is very simple we would like to make it a little bit more designing and friendly, you must have knowledge with PHP, custom web designing, JavaScript and Ajax. Even though you will not need to do any programming we still need you with programming PHP knowledge so you do not mess up any of the functionality while doing the designing. We will only consider bids with providing example application projects you have done similar to this.