i would suggest you first browse trough the Labview examples (help -> find examples). you'll get lots of ideas about implementation.
then you sit and write specifications to your application: what, how, when, conditions.
then you make a first version,you post it here for help, tips and design advices.
not knowing timing, constraints, and controls to handle, it is difficult to come out with the "magic" solution.
-----------------------------------------------------------------------------------------------------
... And here's where I keep assorted lengths of wire
s...