Sorry, I am unclear what you mean by "assitant". Are you talking about the express VI?
In any case, reading a comma delimited file is pretty simple, just use the plain file I/O finctions and set the access options as desired.
Thanks for the reply. Yes, the assistant. I'm just learning so I'm not sure how to easily use the read from spreadsheet file to create a waveform (first column is time, no headers). The options with the assistant were perect for this. Can I change this to the file read command without too much work?