For Spark in combination with Star LC-7211 and operating system: Windows 98 - Use 'Star LC-7211' or 'Star LC-10' printer-driver Windows NT4 - Use 'Star LC-7211' or 'Star LC-10' printer-driver Windows 2000 - Use 'Star LC-7211' or 'Star LC-10' printer-driver Windows XP - Use 'Star LC-10' printer-driver Set custom-size for printer-driver to: Width : 20 cm Height: 5.1 cm SPECIAL NOTE: Be sure SparkEngine is set to 'Use special mode' and printertype is '9 pins'. Be sure printer-driver is set to 'Print directly to the printer'.