The Jet Reports installation program will generally be able to determine whether you have a 32-bit or 64-bit installation of Microsoft Office. This "bit-level" for the Jet Excel add-in must match the bit-level of Microsoft Excel.
If you are using the Jet Reports MSI installer for an older version of Jet, you will need to know the bit-level of your installation.
This article discusses how to find what edition of Microsoft Excel you are using.
Select the File tab from the Excel ribbon and then select Account > About Excel.
The version and bit-level of Excel will be displayed in the top line of the window:
Select the File tab from the Excel ribbon and then select Help
Your version and bit-level of Excel will appear under About Microsoft Excel.
Excel 2007 is 32-bit