What map to download?

 

Hi... newbie here. I recently bought a nuvo 205 for a long driving trip I'm taking this summer. Found this site and love the POIs! However, I'm having a problem...

When I registered my 205, I saw that I was eligible for a free map update. When I downloaded this and tried to install, it offered me a choice of several maps, including things like "lower 49 + PR NE", "lower 49 + PR NW", etc. What is the difference between these? I think I understand all but the last 2 letters: northeast WHAT? Surely not Northeast Puerto Rico... Northeast US? But "lower 49" should include NE US, right?

Any help in decoding exactly what is in these different choices?

One more question... I have the download from Garmin on my hard drive... If I install one map, can I come back later and re-install a different map? Or do I just get one shot?

Thanks,

Kelly