Hi richarde0c,:wave:
It will depend on where you downloaded Trainz from. If you got it from Auran then just look for the Trainz folder you downloaded and run the exe file from there. If you got it from Just Trains; then you need to look for the install program, I think it’s called Trainz10, it a web bootstapper; so just double click on it and will download and then install Trainz 2010 on your computer.
Belkenn