Help with dynamic data

Hi,

I'm trying to set up a product page for a product with multiple sizes. All my data is being pulled from a table in my mysql database. I have created a drop-down list for the sizes and I want to show information relating to that size (i.e. price, weight, etc.) dynamically after the customer chooses a size. I have inserted dynamic text areas for this information, but I cannot figure out how to make it correspond to it's respective size. I am fairly new to DW, so clear and simple amswers would be greatly appreciated.

Thanks!

Bob