Measurement Computing isn't telling you the whole truth. It may work with the LabVIEW GPIB primitives or with GPIB functions that they provide but all new instrument drivers use an API called VISA and all makers of GPIB cards should provide a VISA interface. VISA is fairly old now and is a more portable driver interface. With VISA, you can write a single driver that will work with a serial, GPIB, VXI, USB, TCP/IP communication buses. You can buy a lot of instruments with optional buses and VISA makes it easy for the author of the driver to support everything. By saving a few dollars on the hardware, you've gotten into the situation where instrument drivers that you download from NI, Tektronix, Agilent, etc. won't work without a lot of mod
ification. What you will have to do is replace every VISA Read/Write in the instrument driver with the functions that come from MCC.