Here are the results of using the information at that URL
# sudo yum grouplist
Gathering header information file(s) from server(s)
Server: Fedora Core 2 - i386 - Base
Server:
kde-redhat.org (kde-stable)
Server:
kde-redhat.org (kde-stable-all)
Server: Fedora Core 2 - i386 - Released Updates
Finding updated packages
Downloading needed headers
Getting groups from servers
No groups provided or accessible on any server.
Exiting.
HOWEVER, I am running FC2 and the information at the URL indicates that is
works for FC3. Does it also work for FC2?
Syl