The Cool C (tm) speech software turns computers using a Windows operating
system into talking computers capable of having interactive conversations
with those using the computer. The computer can function as a speaking
virtual tutor or talking encyclopedia. Organizations can broadcast messages
to everyone in a broadcast group and these messages are then delivered
verbally with each computer speaking directly to the computer user. Further,
those using Cool C may program the conversation database and teach their
computer to say new things to add to their talking computers skills. A built
in talking "reminder" system allows you to program your computer to say
specific things at a specified date and time. 

http://www.coolconversations.com/

Article in eWeek - May 2004 - page 48
http://www.eweek.com/article2/0,1759,1580267,00.asp