Oscommerce Expert Dynamic List Boxs

I hade already given this project to a few people that say they can do it but they gave up onit as I do not think their skills were abdicate but I do not think this will be hard to do. So please make sure you understand what is involved and if you can do it before bidding The website is [login to view URL] my requirement is for list boxes like these to select products on my site as I think it will be easir for customers Eamples [login to view URL] [login to view URL] The list boxes should appear on every page bellow the header and in-between column left and right We must have the first list box selecting the manufacturer The second selecting either inkjet or laser. For this we may need to put in a extra feild in the database against each product to define laser or inkjet. The third selecting the printer. Then all the cartridges associated with that printer displayed without clicking a button to display them. Skills i think will be needede are PHP, MYSQL, Java and AJAX Please contact me if you have further queries Thanks