MSAgent and Voice Recognition Problem

[Xarky]

Hi,
I am writing an application making use of MSAgent and a dll for
voice recognition. The dll & MSAgent are provided in the following
links
http://www.c-sharpcorner.com//Code/2...ecognition.asp
http://www.microsoft.com/MSAGENT/default.asp

My problem is that my MSAgent character is speaking, and the text
being speaken is acting as an input for the grammar of the voice
recognition event.

I have tried to create a flag, so that when the MSAgent character is
to speak, it sets to true, and when it stops it sets back to false.
But that didn't solve my problem, because the character seems to speak
on an own controlled thread.
Can someone help me solve this problem.
Thanks in Advance