You also need to install the DAQmx drivers. Typically you get them on a separate CD (or 2) when you get your LabVIEW. If you downloaded the Evaluation version of LabVIEW, you will have to download the DAQmx drivers as well.
I am not sure if there is a CD that comes with the card. If there is, you can load the driver from there. Load the driver after LabVIEW in order for it to know that it needs to tell LabVIEW what LabVIEW needs to know.
Hope that this helps,
Bob Young