By "x offset" I assume you mean x value. So I assume you want to plot [x,y] coordinates in Diadem and you want all of your x,y pairs to be in a 2D array in which a column or row represents x and the another column or row represents y. Diadem doesn't work with this "2d Array" paradigm. Diadem can, however, plot a channel vs another channel. So you need to save your x data into Channel 1 and then your y data into channel 2. Then in Diadem plot channel 2 vs channel 1. For a tutorial about on saving data to channels see the Introduction to LabVIEW Data Storage VIs.
And by the way, I won't hold it against you that you're an Aggie... Hook'em!