Speech Recognition

Question

Hi Friends,,,

I want to know how can i develop a speech recognition app.
I have already done the opposite side which is converting text to speech.

simply what i want to develop is,

user speaks using the microphone.
then the application should track the "word" he says and output that word to a textbox.

after the application is loaded, it should automatically capture the word he says.
he doesn't need to click any button.


im using win XP and VS2008(.net 3.5)....C# language
if you could please give me a hand to do this asap.....

Charith