To use excel to generate a bar code is easy.
2. Copy the font files to c:\windows\fonts
3. Open an excel file with 2 columns. One column for normal character and another column for barcode.
4. On the second column, paste this formula =CONCATENATE(“*”,A1,”*”)
For open office calc use this formula =CONCATENATE(“*”;A1;”*”)
5. Choose the “Free 3 of 9 Extended” font
6. Adjust the font size accordingly to get a bigger barcode size