implement shopping cart system,flash T-shirt customisation

Revo Design Solutions, a local-based printing company, provides services for corporate gifts and customization on design and print materials. We already have our own website up. In addition to our customers' service, we wanted to do an online self-custom function for our customized products (t-shirts, stickers, plaques, Button badges and printing). You may like to visit their website for a better understanding. [login to view URL] This is the reference they've provided. However, the interfaces shall not follow exactly. Please follow the link below for better understanding: [login to view URL] The application shall also be linked up with the existing shopping cart and then proceed to payment with PayPal. User is require to enter their contact details before proceeding to payment. The existing site is using asp. However, it can be change to php, depends on which language you are comfortable with. As the existing site is using asp, I will require you guys to change the files to php. The design for existing site will remain. [login to view URL]'s customization interface is one which the client likes very much and wishes to follow as closely as possible. Requirements *Those title in red will be the backend management system Category Management (Pending)  create, edit, delete o specification description o image o price Library Management I will need a backend system to upload new prints, logo and designs to the flash application library. Reference to [login to view URL] , they have a section call pattern which enable user to select existing designs. I will also need a product upload system to upload new type of products. For example, I only have a round neck t-shirt now, maybe next month I will have a polo t-shirt and I will need a backend system for me to upload the new polo t-shirt.  upload, edit, delete o New product (e.g. Type of t-shirt) o price of each product o new design, prints and logo Delivery/Order Management  able to retrieve customers’ address and information  check transaction history Product customization (flash actionscript)  refer to reference site o color palette o graphics and artwork upload o basic live editing tools (sorting,scaling,rotation,delete) o font type dropdown Shopping cart integration (asp/php)  For the shopping cart, I will wish to follow the workflow of the reference site  add, edit, delete product from cart  quantity and size selection (drop down)  billing information o email* o first name* o last name* o address 1* o address 2 o postal code* o country* (drop down) o telephone*  delivery information o first name* o last name* o address 1* o address 2 o postal code* o country* (drop down) Please download the attached file to see it clearer.... give me a proper Quotation...