Estimated shipping

[yos40]

What modul should i use to put an estimated shipping box in the shopping cart page?

It is allso important that the customer will only get his shipping quote using a zip code and not have to have an account?

an it is preferble that it will not be in a pop up box,

I allso think that my shopping cart page is a little wird and differnt than the original page,

 

If you want to check it out here is my site

 

www.c-square-d.com