Hi. I tried to do this for free, but Freelancer forced this as the minimum bid.
Because you are doing this in Excell, you had to install a barcode font; you cannot do barcodes in Excel alone without a font!
I have no idea which barcode font you used, but the best totally free one I have is "Free 3 of 9 ext".
For his font, just put your text for the code in a cell, then reference in another cell where the barcode will display. Change the font of the barcode cell to Free 3 of 9 and there the barcode is!
EXAMPLE; The text is in cell A2, the barcode is in B2.
cell A2: *ABC1897cd*
cell B2: =A2
NOTICE THE * BEFORE AND AFTER!!!!! This is how the start/stop codes get added to the start/end of the code!!