You could add a macro to the first workbook so that when it's opened, the second
workbook is opened:

Option Explicit
Sub Auto_Open()
dim myPath as string
dim myFileName as string
dim wkbk as workbook

myPath = "C:\yourpathtothefile\" '<-- include the trailing backslash!
myfilename = "BEA U.S Flows & Stock 1980-2007.xls"

set wkbk = nothing
on error resume next
set wkbk = workbooks(myfilename)
on error goto 0

if wkbk is nothing then
'open it!
set wkbk = workbooks.open(filename:=mypath & myfilename)
else
'do nothing, it's already open
end if

End sub


If you're new to macros:

Debra Dalgleish has some notes how to implement macros he
http://www.contextures.com/xlvba01.html

David McRitchie has an intro to macros:
http://www.mvps.org/dmcritchie/excel/getstarted.htm

Ron de Bruin's intro to macros:
http://www.rondebruin.nl/code.htm

(General, Regular and Standard modules all describe the same thing.)

J.Mart wrote:

Hi,
How do I start to write a macro in excel that automatically opens the file
"BEA U.S Flows & Stock 1980-2007" when the file "Duignan_US-ASIA_EU Trade &
FDI Flows" is opened?

--

Dave Peterson