I am trying to tell you to read the mapmaking tutorial.EDIT: A bit confused. Exactly where do I save this .tga folder to? The tutorial said to the usermaps folder in my documents but I just want to be sure.
Lets start from the beginning:
First you have to make a blank map with the terrain editor.
1. Delete the C:\Users\User\Documents\My Games\Sid Meier's Railroads! folder (save the “Settings.ini” file
2. Start a new game, that will create a new C:\Users\User\Documents\My Games\Sid Meier's Railroads! folder. Copy the saved “Settings.ini” back.
3. Open a new game and with the Terrain Editor create a new map of “225 sq units” that will give you a 15 x 15 map. (15 X 15 = 225)
4. Name this map NYC_Chicago ( exactly, because I’ll will be making the same map here).All the different files automatically will have the same name.
5. Save the map and get out from the program.
6. With a Paint program (Paint, PaintShop Pro, Photoshop, Gimp. I suggest Gimp if you don’t have. It’s free) open the file “map_NYC_Chicago.tga” It’s 901 x 7208 pixel size file made out of eight 901 x 901 different color pictures.
7. The top picture is the “Hight Map”. It’s a gray scale map where the lighter colors represent higher elevation and the black between 0 and 49 represent water. The TGA file that I posted is this file. Therefore you have to copy this Hight_Map_901.tga file into the very top of this stack of squares. Save it and get out of the paint program.
8. Start the terrain editor and load a “Saved Map” NYC_Chicago.SMR_Scenario . If you did everything right you should have the map loaded.
9. Now you can place cities, industries different terrain types with the editor. Be sure that you save both the cities and the terrain (two different place) before you quit.