[CentOS] Centos 6, KDE 4: canot manage network

In KDE 4, I click:

Kickoff > System Settings > Network & Connectivity > Network Settings > Network Settings

I get a popup informing me that my system is not supported. (This did not happen before.) I am offered choices. I choose RedHat 6.0 (Is this wrong? I also tried RedHat 9.0.).

I select Network Interfaces. I see nothing on the list *** even though I am presently running eth0 and can successfully ping google.com through it.***.

Now I set that interface using a GUI just a few days ago. I will say, the GUI looks different.

So what's happening?

Thanks for your help. Mike.