What if we have the message “A file named Builder5.xlsm already exists in this location”.Do you want to replace it?

Close Excel >> Delete the file Builder5.xlsm found in Documents >> Move the file Builder5.xlam from Excel 2007 to -
C:\Program Files\Microsoft Office\Office12 \XLStart\ For Excel 2010 and above.
C:\Program Files\Microsoft Office\Office14\XLStart\to the desktop.
Double-click the file Builder5.xlam >> Click "Enable Macros" >> Close Excel >> Move the file Builder5.xlam 
from the desktop to the folder- 
C:\Program Files\MicrosoftOffice\Office12\XLStart\ or C:\Program Files\Microsoft Office\Office14\XLStart\