system-config-selinux not loading

[netweblogic]

Not super linux savvy so sorry if this isn't enough info.

Running F9, relatively new install. I had a similar error to this with system-config-firewall, but looking at the files, I can't seem to see what's wrong. Seems like some sort of gtk module is missing or badly configured. Any help here?

# system-config-selinux
Traceback (most recent call last):
File "/usr/share/system-config-selinux/system-config-selinux.py", line 25, in <module>
import gtk
File "/usr/lib64/python2.5/site-packages/gtk-2.0/gtk/__init__.py", line 79, in <module>
_init()
File "/usr/lib64/python2.5/site-packages/gtk-2.0/gtk/__init__.py", line 67, in _init
_gtk.init_check()
RuntimeError: could not open display


Thanks for any help...