asterisk users - May 2007 - Save Key tone to MySQL DB

Hello All,

I am trying to build an IVR based survey system and I would like to save 
the key touch-tones to MySQL DB. It is a simple application where it 
determines the Caller ID and asks couple of questions and save the 
Callers input to the MySQL DB.

I am thinking of building IVR using FreePBX, but my main worry is how to 
save the Callers input?

Simple flow: -
1) Verify the CallerID, if not verified as for PIN number.
2) Once Caller is verified ask: -
    a) How would you rate our product? Press 1 for Excellent and Press 2 
for Bad.
    b) How did you like XYZ product? Press 1 for Excellent and Press 2 
for Bad.
    c) Are you satisfied with our product? Press 1 for Excellent and 
Press 2 for Bad.
3) End the call.

Now I want to save the Key input from the Caller for each question.

Hope these help...

Regards,
Nitesh