QTR-Quadtone RIP

I made a print in QTR..print looked good..a little warm..then I
re-read
the instructions and saw I was supposed to first change the image in
photoshop to grey scale from RGB. I did that and the print was
terrible..flat no contrast.What did I do wrong? How am I supposed to
use the grey space
zip file which contains gray matte icc, gray photo icc, rgb lab
icc...etc.? They were moved to the QTR folder. Also I downloaded the
curves for various papers, extracted them into QTR, but I do not see
them pop up in the GUI interface. What am I doing wrong. As always
thanks for your support..Ann