QTR-Quadtone RIP

I am a new user (Mac, Leopard, Epson 4000, k7 inks) and am attempting to follow the 
instructions for linearizing a Quadtone RIP curve using the Eye-One.  I have printed the QTR 
21x4 random stepwedge, scanned it with the Eye One, and used the QTR-Linearize-Data to 
create the .txt file with the Lab curves.  Then I get to the section of the Eye One .pdf file 
entitled "Linearize a QuadTone RIP Curve".  I have created the Ink Descriptor file,  but find the 
instructions at that point too vague.  It says "Make the quad curve and print out the Step-
21-gray stepwedge."   How does one make the quad curve?  Are there further instructions 
elsewhere?  

From there I am assuming I should use that curve in the normal manner to print the 
stepwedge, then rescan with the Eye One and use QTR-Linearize -Data to create a new .txt 
file and then paste the Linearize=... lines from that file back onto the bottom of the ink 
descriptor.  Correct?  At that point I am also unclear what "Reprocess the ink file with Drop-
Quad-Profile" means.  Do I simply drop the new ink descriptor file onto Drop-Quad-Profile?  
The instructions suggest this will create a new linearized.txt file but it is again unclear to me 
how that is then used to create a curve to use in actual printing.

I'm sure I'm missing something obvious here but would appreciate some help.