Jim You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice For he does not know what will happen; So who can tell him when it will occur? Eccl. 8:7
Don't use the report generation toolkit. It doesn't really know how to handle getting data back from the printer regarding such things as the internal fonts. Since you already have the ZPL for your label simply send that to the printer. You can use VISA to connect to the printer via serial, parallel or TCP quite easily. You can also connect to the printer via USB using VISA but that is a bit more challenging to accomplish. Here is some info for using USB.
Mark Yedinak Certified LabVIEW Architect LabVIEW Champion
"Does anyone know where the love of God goes when the waves turn the minutes to hours?" Wreck of the Edmund Fitzgerald - Gordon Lightfoot
Unless you are writing an application that would need to support multiple interfaces I would simply use the basic TCP/IP VIs. All you need from those would be the open, write and close VIs. You may also need the read if you will query the printer for any status information. All you need to do is open a connection to port 9100 on the printer and send the ZPL to it. You can look at the examples that ship with LabVIEW to see how to TCP/IP Vis work. If you want to use VISA you can. There are examples that are included with LabVIEW that show how to connect to a TCP connection using VISA as well.
Mark Yedinak Certified LabVIEW Architect LabVIEW Champion
"Does anyone know where the love of God goes when the waves turn the minutes to hours?" Wreck of the Edmund Fitzgerald - Gordon Lightfoot
