Putting BNSF Into RailSimulator

How do I and where do I put this engine in RailSimulator? Like where and what file does it go in? http://railsim.banal.net/catalog/pages/medium/US/US_BNSF_ES44AC_JC.html

It might have a Asset Setup thing to click on…If not…It goes right here:

C:\Program Files\Rail Simulator\Assets\Kuju\RailSimulatorUS\RailVehicles\Diesel\ES44AC

But make sure when you do put it in there…You delete the blueprints.pak file…If this does not work…Let me know and I will see what else I can do for ya…Also you may wanna ask here:

http://forums.flightsim.com/vbts/forumdisplay.php?f=88

For future help…ENJOY!!!