Converting colour images to black and white using the Digital Photo Professional raw converter | Index | Home Page
You want rich deep blacks, but instead end up with flat grayscale images.  Understand the effects of the colour filters
DPP allows you to adjust black and white settings directly on your RAW file which has advantages over doing the job in Photoshop

Prev Page: Adobe Photoshop CS3 Black & White
Also: What happens to colours when changing to Black & White

Below a RAW file in DPP with the Neutral Picture Style
Scroll down to compare the Monochrome Picture Style Presets

Photoshop's Black and White Tool

The book that's aimed at photographers: Black and White in Photoshop CS3 and Photoshop Lightroom: Create Stunning Monochromatic Images in Photoshop CS3, Photoshop Lightroom and Beyond