Oscommerce modification

The site [login to view URL] has one little problem. If you enter in one category in the left and you add a product with some options (attributes0) the product is added correctly, the thing is that if you add the same product again to the same order, of course, but with different attributes, the cart shows this last product ordered twice, with the last attributes selected. This Request bid, is to fix this problem, so one person can order two products with two different attributes. BECAREFUL!! Last programmer told me this. So before making a bid, please be sure you can do it. ------------------PROGRAMMER NO-RESOLUTION Here is the brief description of this problem, in the /includes/classes/[login to view URL] page there are 400 lines of codes. It has a variable name $this->contents which store the cart information. The main problem is - it is an array which use product id as array index. So, same product cannot be added two times with the same index value. There is another problem - database also have two tables named customer_basket and customer_basket_attributes. Which also track the purchased product with product id. So how can I track two seperate product with same id? ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Internet Explorer Windows