If anyone is known for asking for more mac oriented support, probably myself and Urs. But, in this case the support for the PCIe-GPIB card is available for the new intel macs. Follow the link in the message above. Start a new thread and discuss what is the most pressing need for the Mac platform. What makes sense for NI in terms of return on engineering investment. You can't ask a corporation to do something without return.
I have installed the NI488.2 drivers for Intel Mac and I did not get any problem for communicating with the ENET box. I am using XCODE, my software is writing in C++ and I used the file ni488.h for accessing the NI-488.2 API. Thanks to NI for solving my problem.