Altered Voice in SL

This may have been answered before, but I would like to know what program people use/can use in SL to alter their normal speaking voice.

Right now, I have Morphvox Jr. I hear my altered voice on my computer, but when I'm on SL's beta test grid, turns out my normal speaking voice comes through. Any suggestions on what I can do to use the program I have or anyone have a better program to suggest?

Thanks.

I DLed the MorphVox Pro demo and had the same problem. You have to adjust the audio settings in your control panel to something like "screaming bee device" and it'll work...then you click the little button that says "listen" so you don't have to hear an echo of yourself.

I toggle between robot and dog, myself.