Thank you, Thomas.
I am still having a problem. When I look where you suggested, I get the answer that "C:\Program File\National Instruments\LabVIEW 6\vi.lib\utility\file.llb is not a readable file VI library."
Does anyone know why I can't open this VI? Is it because I have too basic a version of LabVIEW?
I am interested in using the VI in order to learn how to write to files, which I would use in performing some simple analysis of neuronal spike train data.