Do you mean "LabVIEW<->GPIB.vi"? I don't know of any shipping example called just "GPIB.vi"? You're sending the command "*IDN?"? Even though the example uses GPIB and I prefer and recomend VISA, they should work the same. Have you tried using the driver available for the scope? You can download it
here. You can also try the Instrument I/O Assistant if you've got a newer version of LabVIEW.