1º Ulpoad the script to your server.
Now , you need The GeoIPCity.dat DataBase (updated)
You can get that DataBase by following the step 2

2º Open this url:
http://www.maxmind.com/app/geolitecity

Look for the section Installation details

The link where you can download the DataBase is located in the line:
Download the latest GeoLite City Binary Format (xx MB when uncompressed, last updated xxxx 1st, 2009, next update xxxx 1st, 2009)

Now, unzip GeoLiteCity.dat and RENAME IT TO GeoIPCity.dat

And,finally, upload GeoIPCity,dat into the script folder


3º Load index.php (if you have problems , read installation.txt)

...Have Fun !!

Note:
The Script includes a flags folder but if you want a different kind of flags ,then go to:
http://ip-to-country.webhosting.info/node/view/91