Thread Subject: Problem with plot option

Hi,
I would like to plot a measurement result.
the first column of data file is a time
The 2nd colum of data file is a value (result)
the size of the data file is 500 values.

The only plot I manage to get is a plot with X varying from 1 to 500 and two Y ordinates (my first and 2nd column from data file)
I would like to obtain a plot with my first column (time) as X and 2nd column (result) as Y

Can anyone help me.

thanks