QTR-Quadtone RIP

Hello, 
I've been trying to use QTR with my 7600, running on a G4/Panther(10.3.9) 
system. I dowloaded and installed QTR 2.3.5, and the grayspace profiles 
(gray-lab.icc, gray-matte.icc and gray-photo.icc), along with their RGB 
counterparts, were installed on the appropriate place, I think (/Library/
ColorSync/Profiles). However, they don't show up on PhotoShop (CS) "Color 
Settings" working spaces drop-down boxes, as I would expect, although they 
do show up on the "Print with Preview" print space drop-down box. What am I 
missing?
Thanks,
Paulo