Oscommerce Preorder Mod

For an Oscommerce store 2.2MS2 We would like to modify the boring product count by replacing it by a text that says: (In Stock) for product available, (Out of Stock) for products out of stock and (Pre-order now!) for upcoming products. PART 1: Files to be modified for the stock status (in stock, out of stock) [login to view URL] [login to view URL] [login to view URL] (I know that there is a contribution for this, so if you want ot use it for this part of the project it's up to you) ------------------------------------------------------------------- PART 2: By pre-order we mean: The customer can add a product in his basket that is not actually in stock, but will be relased in an upcoming date and not be charged for that product until the release date. We will then charge the customer manually when the product will be released. Exigence: For the preorder module, WHEN we add or modify a product in the admin section and we enter an upcoming date in the field "Date available" the new preorder module must automatically: 1. Replace the "Add to cart" button to "Pre-Order now!" for that product on the page product_info.php. 2. Replace the "Buy now!" button to "Pre-Order now!" for that product in [login to view URL] 3. Add a "Pre-order now!" button for that product in the page [login to view URL] Note: When the release date for a preorder product has been reached all the buttons for that product must automatically be updated to normal. The customer must also be informed (if there is at least 1 pre-order product in his basket) that this product is a pre-order and his or her credit card will not be charged for that product until the release date. Files to add this notification: [login to view URL] [login to view URL] [login to view URL] (maybe not for this file ?) Last thing for this module. If there is only one product in the basket and this product is a preorder one, then the credit card must pass the OSc built-in credit card verification and not be processed through our real-time payment module authorizenet. The customer address, credit card info and order info must be stored somewhere for a manual processing from us when the product will be available. The customer must receive (in the case of a succesfull Osc built-in credit card verification) an email notification that his order will not be charged until the relase date. If there is at least one preorder product in the basket with regular in stock products: The regular in stock products must be charged through our payment module as usual, but the preorder must be deducted from the order and customer must see that in [login to view URL] page. The rest of the requirements for mixed preorder and in stock products in cart are the same as above except that the email notification for preorder must be only for the preorder products.