Hi

I have the following formula that works a treat if all my 80 Workbooks are
open

SUMPRODUCT((INDIRECT("'[Sales for "&$A9&" period 2005_01_01 to
2005_03_31.xls]Sheet1'!$E$5:$E$10000")'Sales'!C9)*(INDIRECT("'[Sales for
"&$A9&" period 2005_01_01 to
2005_03_31.xls]Sheet1'!$a$5:$a$10000")<'Sales'!$H$6))

Is there a way to arrange the above formula to include the path of the
relevent files so they do not need to be open?

The path is C:\Workbooks\<filename

TIA