Quote Originally Posted by GB1

Btw, AE, I've noticed that sometimes (or most of the time) converting digital color to B&W flattens it out. There's some plug-ins that do much better, but they're expensive.. one I think costs $300.

G
I've found that using a gradient map adjustment layer does a far superior job of B&W conversion than desaturating or converting to grayscale. Give it a try, it's quick and easy. You'll find it with the other adjustment layers just above the layer palette.

If that isn't enough "punch" you can then convert to grayscale and go back into the same drop down menu, where you'll see "duotone" is no longer greyed out. Choose that and play with all the 2,3, & 4 ink combinations until you find something you like.