Hello Bingcheng,
The AI Sample Channel VI is installed with the Traditional NI-DAQ driver. You can get the driver from the
Drivers and Updates Page, the latest version of Traditional NI-DAQ supported in LabVIEW 6.0 is version 7.0. It is recommended that you install the driver before installing the DAQ card so that Windows recognizes and configures the proper driver with the DAQ card.
Regards,
Micaela N
National Instruments