how to change a price based on selections
<p>please someone help me. i have posted this 2 days ago on stack overflow but no one has answered. i am pulling my hair and cant figure out what to do. here is my original post.</p>

<p><a href="http://stackoverflow.com/questions/4533509/attempt-to-create-apple-like-shopping-cart-page-price-updates-based-on-customiza">attempt to create apple like shopping cart page (price updates based on customization selections)</a></p>

<p>i dont know what this type of cart is called and i have spent days on google and cannot find one single tutorial that explains how i can do this. how the heck has the developer at apple or dell or hp learned to create such a thing. the knowledge came from somewhere....</p>
