You could put something like this formula in Cell C1 or order.xls.

=SUMIF('[Inventory.xls]Sheet1'!$A:$A,A1,'[Inventory.xls]Sheet1'!$B:$B)

Mark


merritts wrote:
Hi,

I have two seperate excel files (file1: inventory.xls, file2:order.xls)
each with two columns (col a: part #, col b: quantity). Using the part
# from order.xls i would like to search inventory.xls for the same part
# and add/subtract the respective numeric quantities.

*the part# is a combination of letters and numbers, roughly AAAA####

Thanks


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