Hi,
you can download the NI-CAN 2.0 driver
here.The driver has the language interface files for C, LabWindows/CVI and LabVIEW. It also comes with examples for each.
The driver has an utility called bus monitor, which allows you to see any activity on the bus (expect remote frames).
For more information refer to the
CAN support pageDiegoF.
National Instruments