Hi,
To the level of my understanding of your problemam answering this: if you it is not suitable, then please describe the issue specifically:
Say one Excel file has data in sheet 1 workbook (If u have changed the name, then that name, in this case Sheet 1):
Right click on that sheet 1, ih displays a list in that select 'Move or Copy" then a small dialog appears, click 'New Book' for 'To Book' option and check'Create a copy' checkbox. It'll open a new book with that data (don'e close this new excel)
Continue this in all the other 6 excel files and that time be sure you select the name of the newly cerated excel sheet in 'To Book' option.
Regards!
Aadhi