C# - Using Some Class Library - Want To Know The Country Of The Visitor And Use That Country Name To Redirect The Visitor To Some Webpage Accordingly

My code:

protected void Page_Load(object sender, EventArgs e)
{
String userHost = Request.UserHostName
}

This is fetching the IP address alright, but now I want to know the country of the visitor and USE that country name to redirect the visitor to some webpage accordingly.

I came across this library but have no clue how to use it in the project. Actually I do, but I am not sure so I am asking.

http://ipaddressextensions.codeplex.com/

When I download from the above the ZIP folder has a DLL file and an XML file. Now, what do I do with these two? Like include in the project. Then what do I type in the code file?

Something like the following.

if (countryName=="France")
{
response.redirect("www.mysite.fr") [code]....

How do I go about it? Also do I really need to type SO many if blocks for ALL the countries. How do I shorten this code?