Digital BW, The Print

I wanted to print a few prints in B/W using my R1800.  I have Photoshop CS3, and printing 
with the color carts leaves my prints "muddy". Is there a vendor that supplies carts for the 
R1800 like they do for the r2400?

Also, I have seen Qimage mentioned here.  Is this a good software package for printing?  I 
have a 7"X55" panorama (in color) that I want to print, but fear the 44" limitation of the 
Epson driver.  Will Qimage work?

Uncle Dannie