Build a Shopping website

I want to build a shopping website in English, my customers will be American, the products are from a Chinese shopping website, so the function of this website is to help English speakers to buy products from a Chinese Website, just like we are playing a shopping agent, when customers order here, we buy for them and deliver the product to their oversea address. Main function of the website I want: 1. English to Chinese translation in product searching box. (e.g customers type "bag" on the searching box, it shows "??"in searching box of the chinese shopping website and show the products. I want to define the dictionary by myself, like "bag" means "??"). [login to view URL] customers the price in US dollar and shipping cost. (I need a system here to exchange the price from Chinese dollar to US dollar, the price showed to customers will include shipping cost and my commission of the deal. The price of the product in Chinese dollar can be caught from the chinese shopping website.) [login to view URL] customers to register to my website and fill in address information while customers checking out the product. [login to view URL] cart function with paypal. [login to view URL] customers the orders status, like "processing" or "delivered" in "My account" of my website. [login to view URL] all the above function is ok, we will talk about how to build the Home page and other pages, those are pretty simple than the above function. After the mission completed,I want all the website documents to guarantee my website run in good shape, It is a little complicated with the translation part, but I hope anyone who can do it will contact me for more information if you don't understand.