PHP page build for Auto Listing website

I have a vehicle listing website and I would like to have 23 of the webpages written in simple php code.? The original pages were written using PEAR and SMARTY which are complex programing components that are keeping my pages from running on a php5.2 server.? My mysql database if fine and my backend admin pages are fine.? The main website pages and database are located at [[login to view URL]][1].? I do have a development site already on a php5.2 server.? I just need to have the pages on the new server mirror the working site using simple php code.? I do use a page link from my website that gets framed into some auto dealer websites that displays their vehicle inventory in a search results and vehicle detail page.? Once the frontend pages are written using simple php there will be more opportunities to further enhance? the site and I would also like to have some re-design of some of the pages such as where a dealer would log in to edit a vehicle.