Network Manager has Greyed out Connection Information

[InfotechXL]

As a Newbie to linux I'm still learning, I have a problem now where the Network Manager in Fedora 9 were the Connection Information option is greyed out when you right mouse click on the task bar Icon.

As well the Wired Network and Wireless Network Options are greyed when you just click on the Icon which is not allowing me to see any of the available wireless networks to set them up.

I have managed to config eth0 manually

What I cant workout is how to completely remove and reinstall Network Manager

All Help is Appriciated

Regards

Paul H