It's quick and easy to start using this website. As you've found this page you are well on your way to discovering the powerful functionality provided by this site.
Before you go any further it is worth checking that your system meets our technical requirements. You can do so by visiting the System Requirements page.
The map is displayed using a Java applet. This allows us to provide clearer maps and allow you to interact with them (i.e. clicking on the map). The first time a map is displayed you may see a security warning like the one shown below. This confirms to you that the applet has been provided by Intergraph and is free from viruses or other security hazards.
Click the 'Yes' button to accept this certificate and the map will be displayed. The applet is approxiamately 180Kb in size and will take about 30 seconds to download on a 56K modem. You only need to download this once per visit. If you don't want to see this warning again click the 'Always' button.