There are a lot of programs that will fuck up your voice like a robot.
Adobe Audition has a ton of in-house filters you can use to do that. It's a lot like Audacity in a lot of ways, I personally prefer it over Audacity but it's not "free."
Morph Vox, which you can get a free trial of, has a robot filter too.
Getting an Auto-Tune VST for audacity can make you sound robotic if you kind of sing your words a little. If you google auto-tune VST I'm sure you'll find all you need to know to set one up with audacity.
I found this interesting tutorial on how to do it manually,
<a href="http://joedale.typepad.com/integrating_ict_into_the_/2008/09/morph-your-voic.html">http://joedale.typepad.com/integratin g_ict_into_the_/2008/09/morph-your-vo ic.html</a>
Hope this helps at all.
peakock-king
I know a few people who could help you.
I'm gonna tell them about your problem and they should post their help tips for ya here soon.
Good luck.
RatherRandomReality
Thanks man.