Hi 43chiee,
Make sure that you have the newest version of the driver. You can download this driver from http://www.ni.com/support/gpib/versions.htm.
Is your board detected by windows? Did you get a "New hardware found" message when starting up windows after inserting the board?
Check to see if your board is present in the Windows NT Diagnostics utility.
Also, PCs usually have a setting in the BIOS that allows you to indicate whether or not you have a plug and play operating system (OS) on your machine. Since Windows NT is not a plug and play OS, this setting should be set to NO.
Hope this helps out!
Best Regards,
Aaron K.
Application Engineer
National Instruments