Have you tried using rasfilter8to1(1) with the -d option. This is about as
close a I know how to get. I wish I knew of a way to get closer to grey-
scale output!
Brett Chapman
G.E. Medical Systems
(414) 548-5156
uunet!{steinmetz,crdgw1}!gemed!chapmanB
sun!sunbrew!gemed!chapmanB