Group items tagged

I want to add the attributes in the category listing. When a user click on a category, it displays a list of all products in this category with a link to ?Add to Cart?, I want to add above this the product attributes to allow user to select the option he wants and add it directly to the cart without taking him to an additional page to select options.

we?ve been working on two different installations of magento - one installation for the design team (design), one installation for the data entry team (data).