I will second, what RailBlogger has stated about posting your email address
However, MSTS Australia has died off over the past few year's! No one has time for it anymore! I have stopped 3d modelling and trying to complete all my route projects and everyone seems to have moved onto Trainz or Open Rails
You can obtain resources yourself and obtain Gmax or use Train Sim Modeler "It's freeware now, but I can't remember the website to go to" I know gmax can be found on the Turbosquid website https://www.turbosquid.com/gmax
Best of luck!!