2 files running at the same time for adquiring data from different ways

I want to adquire from a serial port( using VISA) and from a DAQ at the same time. I want data form both devices at the same time.
My program is a while loop reading continuously from both devices until I stop the while loop with a control.
I have noticed that I don't receive right data when I read from both devices in the same program.
So, I have tried to run 2 different programs, one for Visa adquisition and another for DAQ adquisition, at the same time. At this way i receive data ok.
So, i want to know how can i do execute 2 different .vi files at the same time and how can i get data from the another one.
Please, help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!. I don't know what to do!
Luz

Luz,
you can insert two seperate while loops in parallel into one VI. Please
take a look into the template browser and the example finder of LV for
some examples. You can find the template browser by selecting "new"
(not new vi!) in the file-menu. The example finder is located in the
help-menu.
hope this helps,
Norbert B.
NI Germany
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.

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