Hey Gary,
So if you have CVI already installed on your PC, along with NI-488.2 drivers, there should be some examples in the example finder, Help->Find Examples. When it comes up, there should be a folder labled Hardware Input and Output -> GPIB. This was written primarily for a National Instruments GPIB board, but this could possibly be some help.
Other than that, you may want to inquire with manufacturer of the HPIB board, they may have some stuff that could be useful
Can W
Can Wong