Open Macintosh HD > Applications > Utilities > AirPort Utility
Click Manual Setup
Shift the focus of your eyes up to the very top of the screen where the Help, Window, Settings, etc menus are located to the right of the Apple icon.
Click on the Base Station menu
Click on Add Wireless Clients to see the setup assistant
Thank you for your time on this. I apologize for not giving you a more complete picture of what was going on.
I should have included that I had already performed the steps that you shared and had gotten to the place where I would enter the PIN.
The problem was that, after entering a PIN that I had come up with, the "continue" button never became active. I called Apple Care and ended up talking to 3 different people before I found someone that knew the answer. The answer is that the guest computer (client) MUST be present inorder for me to complete the setup. So, problem is now solved. Thanx...