Unfortunately you are probably out of luck. I might have been able to tell you 6 years ago when there was a lot more PowerPC software out there, but Apple has since moved off PowerPC software not to mention Mac OS 9 software. You can try some of the old search engines on my website though*
http://www.macmaps.com/mac.html
And if you recently bought a Mac, call AppleCare and ask them to update those voices for Mac OS X,
or go to http://developer.apple.com/and say it is a feature request through the http://bugreporter.apple.com/ after registering for a free online developer account.