How can I install local map to GPS

[LC 100 Bat]

Hi all,

I live in Mongolia and would like to have Mongolian map on my LC 100 2003. How can I do this? Is there a World Map CD that I can update my GPS? It would be noce if GPS working on my LC 100. My LC 100 was used in US imported to Mongolia.

Thanks for your help in advance

Bat