QTR-Quadtone RIP

Re my last post, I have been trying to use the QT program for 3 days 
now as a novice, but I am lost as to how to get a decent bw print from 
it.  I have no idea what models, curves and blends are used for.  
Considering this is supposed to be an easy program for a novice, I am 
going back to using simple Epson printer program, at least I actually 
got decent prints from it.

But if you can help me sort it out I would be grateful

Thanks 
Duncan