Using ZBrush MatCaps in Blender from Kernon Dillon on Vimeo.
In this tutorial we'll take a look at how to use ZBrush MatCaps in Blender, and where to find MatCaps.
This works in Blender 2.5 and 2.49.
Links to MatCap resources can be found at the BlenderNewbies blog.
tinyurl.com/23b8ogo
MY NOTES:
MatCaps means Matierial Captures
http://www.pixologic.com/zbrush/downloadcenter/library/
under matcap library:
* used (check) premultiply option in material tab under image submenu