ok... first off.
It would be better to ask these questions on the forums rather then the blog. More people will see it there. Now to your questions:
1) It depends on the locomotive. If it has the scripting in place all you need to do is press the semi-colon [;] key. If it is a Jointed Rail engine it will activate automatically.
2) I presume you mean Super-Elevated (banked) curves, not elevated.
Elevated Curves are simple, just raise the track up off the ground.

Banked curves are harder. You need to have special banked track to do it, there are a few different packages out there with it. However your trains will not actually tilt around them; to do that you need to use the "Banking Consist" rule.
Re-ask your question on the forums & you can get better & more detailed help.
peter