VPN Button Greyed Out

I just subscribed and installed RedHat Enterprise Desktop 6 a few days ago.  My goal to evaluate using Linux as platform for supporting MS networks.  One of the primary tools I need is VPN of the PPTP variety.  I am unable to configure VPN in Linux Ent Desktop.  The Add button the VPN tab of Network Connections panel is greyed out.  I have add NetworkManager using Yum (at least, I think I used Yum.)  I can see in Add/Remove that "VPN -PPTP" is enabled..  I tried disabling the PPTP component then re-enabling followed by reboot each time.   Did not help.

I would greatly appreciate any help I can get on this.  Very frustrating that in Ubuntu I can do this in five minutes. 

Thank you,

M~