Yes, I have taken a two-day labview workshop from NI. The reason I am baffaled because I dont know anything about the instrument. And the connectivity between the instument and the labview, could not have been tested.
Thank you for your help.
If you are using LV 8 or higher this link will show you how NI provides for quick driver generation, which among other things auto-generates the code!
I may have found some more driver helps for you in the form of possibly related 4142 drivers. The NI site has HP 4155/4156 drivers. Since the 4155/4156 and the 4142 are multi channel instruments, the 4155/4156 drivers may be a good point to start from for 4142 drivers. Also, probably best when looking for drivers to search for the model # under the mfg only. This should allow the best chance of finding all drivers that are available. I found the 4155/4156 drivers under Analyzer, but not Power Supply. I guess I was applying the IVI class names in this case and almost missed these drivers.