It used to be that the GPIB-USB driver was separate from the driver used to control other NI GPIB boards e.g. PCI-GPIB, PCMCIA-GPIB. This has all changed such that a single driver is available to cover all GPIB interfaces include USB, PCI and ethernet. The current release - version 2.0 - is available from the following link:
http://digital.ni.com/softlib.nsf/websearch/BED94F18531CF6EB86256BB9006FD898?opendocument&node=132060_US
The important thing to realise is that historically the API has been kept common across all GPIB interfaces to simplify the task of moving an application from one interface to another. So an application written for a PCI-GPIB card should work on another PC using a GPIB-USB interface.
You will obviously need to recompile under VC++
to taken into account the new driver and run through the necessary configuration steps for the GPIB-USB interface using MAX but other than that you shouldn't have too many problems migrating to the GPIB-USB.
Jeremy
