Contact your local NI sales engineer (or manager). If you do not know who that is, just call 800-IEEE-488 (NI). Ask you local NI guy to refer you to an Alliance Member who has likely used the Order Analysis Toolset to do some nifty things. We do like to show off sometimes. You may even find that we've done something very similar to what you're thinking and could implement it for you much faster and cheaper than if you're on your own.
We do this stuff every day.
Daniel L. Press
PrimeTest Corp.
www.primetest.com