Greetings,
Ah, what you are looking for is
dialogs...
Search in the Ed Depot for "Dialog" or "Dialogs", and see what appears.
-or-
Follow the link to vektorbosun's comprehensive dialog tutorial
-LINK--and-
Pick up the infinitely useful Dialog Maker (beta) by razorwings18, which eliminates most of the coding.
-LINK-You could also dePBO one of the CTI maps, and examine how the authors did it.
That should get you on the right tracks :thumbsup:
-Supreme Commander PsyWarrior
-Psychic Productions