Making trains

I am trying to make a train, and after reading some tuts, it says I need PHX, which I have, but there are no train parts in there, ie wheels bases etc. (train parts).

What PHX do I need for this, or what other way can I make trains?

PHX 3, Under Transportation Props, Spawn Wheel Base and Spawn Train Wheels. Axis constrict all and spawn thrusters.