Just type in whatever phrase you want, and press submit. The computer will "speak" whatever you wrote in a female, male or child's voice. Nice if you don't have the software at home. It will play in whatever media player you have, so you can record it as a .wav.
Now, I have my computer programmed to speak to me whenever I do anything.
When Windows starts, it says (in a female voice) "Greeting Anthony, my master. I missed you"
Or when I get mail it says (in a male voice) "Hey dumbass, check your mail, someone sent you something!"