Hi,
The best source of information to get started on GPIB communication in LabVIEW is the GPIB support pages. Go to www.ni.com >> Support >> GPIB (option 3).
In there you'll find tutorials and examples programs on how to communicate with your GPIB device.
Also look at the LabVIEW shipping examples. In the Help menu, go to Find Examples (LabVIEW 6.1). The key words are Instrument control or Hardware I/O.
Hope this helps.
DiegoF.
National Instruments.