Agilent has plug&play drivers for these instruments that you can download at http://www.tm.agilent.com/classes/MasterServlet?view=productdatasheet&pro-ItemID=1000002086&language=eng&locale=US. Plug&play drivers are written with LabWindows/CVI and can be converted to LabVIEW drivers by. In LabVIEW 6.x this is done under Tools>Instrumentation>Import CVI Instrument Driver.