Actually, you answered your own question a bit i think
That's where I would start.
Since it is not an object(s) that needs to deform, you can use a number of ways such as:
I'm no expert, but personaly, I would try one of these ways first:
Draw out some profile curves, mixing and matching curve degrees, you know, for the edges/bevels, then draw out your rail curves, birail, and see what you get.
Tweak from there.
I'll try doing it right now to see what the easiest way for me to attack that would be....
Then I'll post my results
Gimme a minute....
Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS