One of those sources is http://RotweilerMaps.com. This site has a variety of maps for Asian and Middle Eastern countries. Best of all, they’re free, but they only work on Garmin devices. To download one of their GPS maps, you need to first have MapSource installed on your Gamin GPS system.
If you do not have this GPS software on your Garmin GPS, you need to do one of the following things:
- Download and install Training Center for Windows: http://www8.garmin.com/support/collection.jsp?product=999-99999-04.
- Once this is installed, then go to http://www8.garmin.com/support/download_details.jsp?id=209.
- Update your GPS system with the newest version of MapSource.

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If you are having trouble with this, you may also call Garmin Technical Support at 800-800-1020 and have them help you install MapSource on your Garmin GPS device.
The Rotweiler Thailand South Tourist Edition Version 2.0 map is quite nice. You have all the regular features of a GPS system, including a Points of Interest Database. The POI data base offers you a range of features including local accommodations, attractions, lodging, food and hospitals. The area from the Malaysian Border to Ranong is included in this map.
This GPS website also has a map for all of Thailand known as the All Thailand Routable Version 5.47. This GPS map also comes with a POI database, but there are some glitches with this particular GPS map. It does not work too well with MapSource Version 6.13.1. So, if you have this version of MapSource GPS software, you will have to update your software.