add multiple countries to existing shopping cart

Shopping cart - [login to view URL], feel free to use. I want to replace the Country dropdown that currently exist with an input field that autocompletes. The code is already written. You can see it working at [login to view URL] then - - OnLoad, I want to use the IP address of the customer and populate the country code with the correct country. This can be done using Geocoder, a PHP library which makes it very easy to geocode ip addresses as well as postal address data. [login to view URL] then - - I want a line of text to appear under the Country input field after the selection is made. If United States - "Free Shipping" If Canada - "$5.95 Shipping" All others - "$10-95 Shipping" There is currently error checking for a zip code field depending on the country selected. Error Checking for the zip code field can be deleted. altogether. Easy project, must be completed in 48 hours.