Hey,
If you have the IMAQdx driver for LabVIEW, you have some example code, check this one :
C:\Program Files\National Instruments\LabVIEW version\examples\IMAQ\IMAQdx Examples.llb\Triggered Grab.vi
Hope this helps
We have two ears and one mouth so that we can listen twice as much as we speak.
Epictetus
Antoine Chalons