One option:
Open both workbooks with the one you don't want to keep as your active
window. Select all sheets in the workbook, then right-click one of the tabs
& choose Move or Copy...
In the dialog that appears open the top list & select the other workbook (as
well as specific position if you wish), then click OK.
BTW - it appears that you got here through the MS Discussions site & that
you may well be using a PC - this is the Mac Excel newsgroup
For any
further assistance with the Windows version of a MS program use the
following link - and always specify which version of the program as it can
often make a difference even within the same OS:
http://www.microsoft.com/office/community/en-us/FlyoutOverview.mspx
HTH |:>)
Bob Jones
[MVP] Office:Mac