pkg-config-0.13

I am trying to set up a dev environment for win32, but am having 
problems getting pkg-config to work.

I've installed 

minGW-2.0.0-3
MSYS-1.07

under 
c:\mingw
c:\msys

I Installed the libintl-0.10 and libiconv-1.7 and glib-2.0.6 under 
the 'root' of msys ( c:\msys\1.0 )

Under a dos prompt, the following works
pkg-config --libs glib-2.0 

But from within the msys bash shell, the same line fails with
"Must specify package names on the command line"

For that matter, pkg-config --version , fails from with the bash 
shell with the same error (like its not seeing 'arguments' at all?)

Any ideas?
Shane