Hi KB Lee,
It sounds like Dennis is right on this one. If those files are
missing you most likely did not install the DAQ drivers, or if you did
you did not install support for the LabVIEW version that you are using.
You can find the drivers here:
<a href=" http://www.yqcomputer.com/
;node=132050_US" target="_blank"> NI-DAQ Version 7.4 for Windows 2000/NT/XP</a>
Once you install the drivers you should not have a problem running your old programs.
Best of luck,