QTR-Quadtone RIP

Hello,
If I only want to print in black and white with no toning, do I need to 
use two curves. I am using Win XP, epson R1800 3MK inks.
  Secondly, why would one need to use custom curves? I read the 
information on making custom curves, and being new to this I do not 
have the vocabulary to undersrtand the directions fully.

 I went back to the origin of this group and started reading the posts. 
I hope I do not have to read two years worths of postings to learn how 
to use the QTR in order to use it properly. Or is using the QTR the 
digital equivalent of using the Zone System?


thanks 
Frank