Controlling ELVIS through LabVIEW

Hello. I am trying to integrate my LabVIEW VI with my ELVIS system. I am using a code for a guitar tuner that, when in tune, activates the ELVIS system and sends a voltage to a circuit that emits an LED. I am fairly new to LabVIEW and need to know how I can implement control of ELVIS through my VI.
Here is my schematic so far. And the file.
The data being sent to the Meter is from a scale of 0 to 2. If the guitar is in tune, then the ratio equals 1. What I am trying to achieve is that if this data is 1, then apply a voltage to the circuit from ELVIS and light the diode.
Can anyone please help me out with this? I appreciate any input. I am a grad engineer so feel free to speak in techy. Thanks!

Hi
First of all you should give your teacher a mild kick in the but and say to him "students will never learn Labview properly if they only use Express VIs". Tell you teacher I told you so. I have also done some minor changes to your VI. But it is still plenty work to do. To solve your assignment with real Labview programming you should go to find example and find the example named "Continuous Sound Input". Also you will find some valuable hints in this link
http://forums.ni.com/ni/board/message?board.id=170&message.id=399671#M399671
Good luck
Here is some useful tips for the Labview beginner (we have all been there some time)
1)Then starting a new Labview session enable context help (Ctrl+h). Do not be afraid to use the detailed help option
2)Then stuck, go to help in the toolbar then select find examples
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)
Attachments:
Tuner.vi ‏108 KB

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> I have a framegrabber board that is not from National Instruments. It
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