Just a mini update this morning,
To make an Ace file without photoshop or ACDsee you will need Ben Laws excellent RWAce Tool located on our Website: http://www.railsimulator.com/en/support. under the Railworks art plugins heading.
Once downloaded, follow the install instructions and run the RWAceTool.exe
Click on the single image conversion first, browse for your textures and pick the first _A and click open. Then click view.
Here you can look at RGB texture or the alpha. Close the image down and click back.
Click on the Multiple image conversion.
Click the Add button on the right, then select your 8 textures, then open.
Click the Next button, then the Start button. The process will take a second. Once done click the finish button.
And there you have it your set of Ace files.
Next in Part 5, How to set up your new terrain xml.
Then, in the final Part (6) we will cover how to refference your new terrain xml in your route.