I am trying to rewrite the module for 1.5

Is there anyone who knows how I can get the country name from the checkoutpage before it is submitted. I'm trying to bring the shipping cost under "calculate shipping cost". This is only possible when I know what country is chosen under "delivery information". When I know this I can calculate a shipping cost depending on the country and bring it under "calculate shipping cost" as preview.

I know it has to be possible because when you hit "My billing information is the same as my delivery information." it also takes the information out of the "delivery information" before submitting (probably through ajax...).

Thanx!