Make sure that you have downloaded and unpacked the Barcode Demo Version. Run the setup program from the distribution. The setup program will automatically search for a license file in "A:\LICENCE.KEY" and for a file "LICENCE.KEY" in the same directory, where the setup program is located. If such a file is found and a license key is found in the file, its value is displayed in the upper left field of the setup dialog.
If you received the license key via fax, we recommend to create a floppy with the key before you run the setup.
If you already have installed the demo version, you can change the demo to a full version by running setup with the license key. You do not need to uninstall the demo.
There are different licenses for the Barcode Classic and the Barcode Plus version. Both licenses will be used with the normal demo setup.