Digital BW, The Print

All,

I've got a testy image that I need to convert to a BW for quad 
printing. Lots of trouble with the skin tones. (wedding shot) I read 
through the posts and got some good ideas. The most interesting seems 
to be converting the channels into layers via the Jeff Schewe method. 
How do I do this? Can anyone point me to more info, or describe the 
process. That is, convert the channels into layers? Is this possible 
in 16 bit mode? Thanks in advance.

Barry Gilliand