Railworks America

How can i add effects to rollingstock for example add smoke to the chimneys of the cabooses,if it's possible of course, and does it require any program or it can be done on railworks?

You add an emitter as a child object - to see how this works, just look at a steam engine blueprint. The XYZ coordinate values are the last three-but-one lines in the position matrix ( you will see what that is when you look at it ), I will leave adding child objects to blueprints as something for further study, but you can do it all in a text editor.