Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
First things first, your model has LMT in it, that means you get free lifetime map updates which is great as a map update costs over 60$..
Before we discuss how to setup your Nuvi, can you tell me what type of computer you are using..
Such as a Windows XP, Widows Vista, Windows 7, Windows 8, Or a Mac.If it's a Mac, please check the OSX version as follows.Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.