i am using excel 2003 and am trying to use the SUMIF statement with the below
calculation:

=SUMIF('U:\Operations Reports\[Open Orders
020607.xls]Sheet1'!$B:$B,"Entered",'U:\Operations Reports\[Open Orders
020607.xls]Sheet1'!$H:$H)

As you can see i am trying to get information from another file. The
formula is sound only if the file i am getting the information from is open.
if the file that i am getting the information from is closed i get #VALUE!.
What do i need to do to get this formula to work to pull in the data with out
the source file being open.