Stop!!
With all due respect to Barry, there is an easier & more beneficial way than the method suggested.
I'm assuming the workbooks you wish to copy from are single sheet workbooks, although it doesn't really matter as the technique would be very similar for multi-sheet workbooks.
Open the target workbook
Open the first source workbook
Point to the sheet tab of the source workbook and right click your mouse
Select "Move or copy .." from the context menu
In the "To Book" field, select the target workbook from the drop-down list
In the "Before Sheet" field, select where you want the new sheet to be located once it is in the target book
Click the "Create a copy" checkbox
Click Ok
The above will create an exact copy (an identical twin) of the source sheet (including page set up settings, formats, etc), and copy it into the target workbook in the location required.
HTH