Thanks to Arya and Krrios for allowing this tool to be made possible.
This tool allows you to modify all maps and make changes on a tile by tile basis. Click on any area of the world map to display a tiled display. Click on a tile to display the current altitude and image settings. Make any neccessary changes to the tiles altitude and reselect an tile image.
Changes that you make are saved the mapdif files, so your original map is never altered.
Map Editor can be downloaded from
http://www.uodnd.com/files/MapEditor.zip.
Enjoy!