It sounds like you are using the Traditional DAQ drivers in the
program. These do not get installed when you install the drivers from
the LabVIEW 8 driver CD. You can still download and install them from
this page. If you are using an older DAQ board that is not supported by the new DAQmx driver, this would be the best way to go.
If you're DAQ board is supported by DAQmx, (all E and M series and many
others), you'd be better off converting your application to use the new
DAQmx VIs. If you installed the software from the LabVIEW 8 Drivers CD,
you already have these installed. These really are easier to use and
actually work better "under the hood".
Ed