gtk can't find new version of glib

[Michael Burke <mburke bestweb net>]

I set PKG_CONFIG_PATH to point to the dir where I installed glib-2.2.1 
/usr/local/lib/pkgconfig, also set LD_LIBRARY_PATH and PATH to point to 
the same location but when I try to configure gtk it still gives the 
familiar error:
 ***  checking for GLIB - version >= 2.1.4...
 *** 'pkg-config --modversion glib-2.0' returned 2.2.1, but GLIB (2.0.1)
 *** was found! If pkg-config was correct, then it is best
 *** to remove the old version of GLib. You may also be able to fix the 
error
 *** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing
 *** /etc/ld.so.conf. Make sure you have run ldconfig if that is
 *** required on your system.
 *** If pkg-config was wrong, set the environment variable PKG_CONFIG_PATH
 *** to point to the correct configuration files
Any suggestions would be appreciated.