Write time stamp and Voltage to text file

I am a novice 2011 LabVIEW user and am trying to build a program that will write TIME in one column and VOLTAGE in another to a text file for later interpretation with MATLAB. I started to add elements to an existing code, which I downloaded from the examples forum, because it works well for my purposes of sending a finite square signal. The code that I started modifying is attached to this thread. If somebody wants to take the time to provide me with an example of how I can do this with my existing code, it would be greatly appreciated. I learn better from example.

Regards,

Sean.