Bob.......thanks
Just to clarify, from the DirecTV Wireless Kit message on the TV screen while doing the set up, my entire network name was displayed correctly and appeared to be the Apple Air Port Express network connection was accepted by DirecTV as is. Seems the only way the DirecTV device could have gotten the Network name would be from the iMac & Airport Express
The error condition came when the message displayed on the TV indicated I had a protected network and specifcally a " security code " had to be entered. Error message was invalid security code, no reference to the network name being invalid.
My password for Airport Express is 6 position lower case alpha and 2 position numeric, 8 total
" Set the Wireless Security on your network to use WPA/WPA2 Personal security." This is the setting I have.
New to this condition, Airport Express problem resolution and no expertise. Would you still be of the opinion I need to change the Network name ?.