You probably didn't select the "Speakup" keymap during install. You absolutely have to do that with Redhat or you will be unable to review the screen after install. I think you can change it after install, but I can't recall how as it's been awhile since I used Redhat. I would check the setup command out as that's likely to be one way to do it. I'm sure the many Redhat experts on the list can explain it better.
