Bizrate style, price comparisson

Hello, I'm looking to develop a website like Bizrate. Basically in terms of connection to affiliate sites like Amazon, Barnes and Nobles, and some more like that to make price comparisson. I will be responsible for the site update, post new products and all changes in the future, but I'm looking for the basic system. It will be hosted in a windows server, so I prefer to have it done in ASP and a SQL database. However, I know the system I am asking for is nothing new and maybe some of you already have it done in PHP and MySQL for example. So, if you already have it and are willing to use the same code please let me know. It would be better in terms of time. Sites like Amazon have features like WEB SERVICES, which allows a real time connection with their database and products. I would like to have this implemented too. I am affiliated with many stores so I would like to offer their products in my site as automatically as possible. I will manage the look and feel of the website, but as I mentioned, it needs to be received at least working in a rough layout or design. Please visit the following sites so you can have an exact idea of what I am looking for: [login to view URL] [login to view URL]