Hi,
Before I get into your question, what version of LabVIEW are you running? What DAQ device do you have? From your question, it appears that you are programming in Traditional DAQ. If you have LV 7.x you may be able to program your device in DAQmx. DAQmx is the new driver and we are trying to get all of our customers to move away from Traditional DAQ and program their devices in DAQmx. DAQmx is substantially easier to program in than Traditional DAQ. In addition to this, all new devices will support DAQmx as Traditional DAQ is phased out.
-Sal