In this video tutorial, viewers learn how to announce alerts on a Mac OS X computer. To do this, open the Speech preferences and click on the Text of Speech tab. There, users are able to set up the computer to announce when alerts are displayed and announce when an application required your attention. Users are able to set additional options by clicking on Set Alert Options. Users are able to select a different voice, phrase and delay time. To preview the option, click on Play. This video will benefit those viewers who use a Mac computer and would like to learn how to announce alerts on the computer because they have a limited vision and may miss pop up alerts.