Jim,
The driver for this instrument is located at:
http://ftp.agilent.com/pub/mpusup/vxipnp/index.html
If this is not a driver specifically for LabVIEW, you can use Call Library Function.vi within LabVIEW to convert is to work with LabVIEW.
Hope this helps,
XD Gao
Application Engineer,
National Instruments