GeoPhrase
GeoPhrase allows you to dynamically insert customized welcome messages on to your page. You can either design your own phrase or use one of our defaults. Note: There is no need to install any special software on your web server.This is what the default greeting looks like: Special welcome to our visitors from Dublin, Ireland.
This basic service requires no sign up or registration - just cut and paste this very small piece of code onto your home page.
Register for our advanced service, which is also FREE and create your own templates. You can use the advanced service to create your own phrases, paragraphs and even whole pages based on the geographical location of your site's visitors.
More information: http://www.geobytes.com/GeoPhrase.htm