Joomla Component/Modul improvements

Improvement of a Joomla component/module (Mini Shopping Cart System for delivery services) 1.) Module: - Shopping Cart should be AJAX (adding,deleting, modifying the cart with real time calculation) - Produkt attributes should be listed separated with image (not in an info box) - so the user can modify the shopping cart directly 2.) Component: - In Backend the Product attributes should be able to have small icons, too - Main Product should have more than 1 image. - Set images to product attributes, too - In Frontend: Set a total amount for present (if user buys goods for X amount he get`s a present). - Insert Captcha Code for submitting the order - Fields for order should be defined - currently there are some fields but the user can not see what he has to write in that places. At last the component / module should proper work like a fine shopping cart...suggestions welcome !!