Hi joseknight and welcome to our community
Assuming Captivate 3 trial doesn't change the playing field
here, the answer is that yes you may continue to use the project
you create using the trial. The main thing folks miss is that if
you look at the Project settings, the trial configures an
expiration date for anything created using the trial. In the trial
mode, you are prevented from turning this off. But once you
graduate to the paid full version, the option is enabled and you
must visit this area to turn off the expiration for what you
created with the trial.
Hope this helps... Rick