Tutorial: Using Barcode Fonts in Excel Spreadsheets  If you are
creating non-trival barcode types such as Code128 and UPC-A, you
can not just type your number and format with a barcode font.
This never works. You need to call the macro functions we
provided - and format the results with the font instead. It is
easy to create and print barcodes in Excel spreadsheets, once
you finish this tutorial.  Macro Security Settings  Started with
Office 2003, you need to change macro settings in order to run
macro. Follow the steps below:    1. In Excel 2003, choose Tools
→ Macro → Security.   2. Set the security to Medium. (See
illustation A)   3. If you are using Excel 2007 or 2010, click
on Developer tab, the Macor Security button on the ribbon.
Choose "Disable all macros with notification". (See illustation
B)   4. In Excel 2007 and 2010, by default the "developer" tab
is not enabled. Follow instructions in Enable Developer Tab in
Office 2007/2010 to enable the tab first.  macro security
settings macro security setti