You can install Google Maps to use the Earth or Satellite view on your memory card. It is not required to install it on your system drive. I like installing applications on memory card, giving the applications more power to use the system memory because it is not full yet. Google Maps require 1MB of disk space.

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After installing Google Maps, you will find it in the Installations menu of your Nokia phone. To easily open Google Maps on your Nokia phone, I suggest adding a Google Maps shortcut to your Home Screen (Settings>Personalization>Home Screen>Mode Settings>Home Screen Applications>Application Shortcuts).
The first time you launch Google Maps to view the earth or search for locations by voice or manually typing, you will be presented by a Terms and Condition screen. Accept it to start using the program.
You can connect Google Earth or Google Maps using your SIM cards connection (GPRS, for example) or if there's public Wi-Fi, you can use that too because the program will search for any available GPS network.

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