Hi doctorhash-
In order to use the DAQ Assistant in LabVIEW you will need to install the NI-DAQ drivers and include support for LabVIEW. This download is available from the
Drivers and Updates section of ni.com. You should search for Multifunction DAQ for the appropriate operating system.
If you already had NI-DAQ installed before installing LabVIEW you will need to modify your NI-DAQ installation to include support for LabVIEW. This can be done in the Control Panel>Add or Remove Programs by choosing National Instruments Software>Change and selecting to Modify your NI-DAQ installation. You should then add support for your version of LabVIEW.
If this doesn't work please let us know more about which versions of LabVIEW and NI-DAQ you're using and which operating system you're running.
Thanks-
Tom W
National Instruments