The file includes an aircraft config entry. Just paste it in your aircraft config file at the end of the last entry and update the sequence number. The N610US file is extracted to the DO 228 folder.
Note: This package was modified on 25 October, 2016 to include the following update: I realized after uploading the Terra Cotta texture that there was an area around the main landing lights that was missing the bottom Terra Cotta color. If you want to update the original file so the color is applied properly, just unzip the attached file and extract the CADDDOC_EXT1 texture file into the Texture.N620US folder and let it overwrite the original texture.
Modified by the SOH Librarian.
This paint is used in Prepar3D, but should work just fine in FSX.