Modification of Orderform

A contact form, which is used as order form (for currently only five products) needs to be expanded a little bit: Currently, there is only one checkbox (to order an additional product) and the ability to order one of the 4 standard products, which are displayed as radio buttons. So in total, only two products can be ordered by a client. Now I need that unlimited checkbox products can be ordered which means that more than 2 products can be ordered. Following needs to be done: 1.) Multiple products can be ordered - The orderform is changed so multiple checkbox products can be added (using a var array in the file) and ordered - The javascript order summary (which displays after selecting the products on the same page) displays the correct order total - The confirmation e-mails (one to buyer and one to company) after an order are sent properly (with the right product info ordered) - The ordered products are correctly stored in the db which means the db needs to be altered 2.) A small picture can be placed next to each product name - Currently, products can be added/modified using a var array in a file (only product name and price). I need that also an image url can be inserted into the array which then displays on the order form The work must be done on the programmer's webspace.