Add-to-basket script

I would like to add a simple feature on my website. My site creates home automation packages, which are comprised of many different groups of parts. I would like to list about 10 of these part groups on the left hand side of my html page. Each group of parts will have a description, price, and a add-to-cart button. When I user clicks the add-to-cart button I would like a summary to show on the Right hand side of the page. By the time the user is done with the configuration the summury will show all the items they have selected and the total price. I was thinking something along the lines of the Windows Update page. On that page you can pick what downloads you wish to download. When you check a box it adds the item to the top of the page and updates the total MB download size. It is very important that all this on done on one page. I don't want to reload a page everytime the user makes a selection. There will not be any "check-out" where a purchase is made. I would like this summary and price to be email to me (along with contact info) when they are done. Here's the page I am working on: [login to view URL] Thanks, Josh