Digital BW, The Print

For Ken or Carl

I am sure this is a stupid question.  But, for printing quadtone images do you 
recommend converting to RGB from quadtone before sending it to the Epson 
printer, or will the print driver just convert it on its own.  That is, is there any 
difference printing in RGB or quadtone mode ?

By the way, I concur that tones are beautiful with your modified quadtone 
preload.  

Final question, anyone have any other quadtone curves to create digitial 
platinum effect.