These get installed w/ NI-DAQ when LV exists on the computer.
Reinstall your NI-DAQ either from the LV 5 CD (CD:\Drivers\DAQ\setup.exe) or standalone CD version. If you're using an older legacy board and are using NI-DAQ 6.1 or lower, I'm pretty sure you have to specifically choose to have LV support installed during the setup.
2006 Ultimate LabVIEW G-eek.