Integrate XML Feed API and Stylize to Match Template

We need someone to integrate an XML data feed from a product comparison API into our templated website. It will look and function similar to an ecommerce site except there will be no checkout. The product will link to the vendor site for purchase. The XML data is fetched via HTTP. The returned XML will then need to be stylized with CSS to fit. There will be 4 main types of pages - a "HOME" page, a "CATEGORY" page, a "SEARCH RESULTS" page, and a "PRODUCT DETAILS" page. Each page will be within the main frame of the template. There will need to a category list that is generated from an API call on the left along with ways to refine the view. All will be based on the options available through the API. The feed will be integrated into a page similar to: [login to view URL] But look more like: [login to view URL]