Here is a clearer Spec -

In the current version of the cart, there is a cart panel with items and a sub-total
there is a second panel with a box for a zip code that returns shipping quotes from
the store's shipfrom address.

I want help modifying the cart view form as follows:

1. Add country selection so that the shipping quote can be international.
2. fold the shipping calculation results into the cart form so that one
can see the items, subtotal, shipping and handling and total BEFORE
selecting checkout.
3. add a 3rd panel for coupons so that someone can use a "free shipping"
coupon and have it also folded into the cart view form BEFORE checkout.

that's it in a nutshell. What other info is needed to come up with an estimate?