Let your computer do the talking using
KMouth! You can setup phrases you would like to say and your computer will speak them for you. You can even use your own phrasebooks. Visit
http://www.schmi-dt.de/kmouth/index.en.html for additional information on
KMouth.
In Fedora, KMouth is packaged in the kdeaccessibility package. This package also contains kmagnifier, kmousetool, and ktts, all of which are discussed in other areas of this guide. To install kdeaccessibility you can either select System > Administration > Add/Remove Software and then type kdeaccessibility in the screen that pops up or in a terminal window type su -c "yum install kdeaccessibility".