Hi Axehandler,
You aren't missing anything. There is not a version of DAQmx that supports both LabVIEW 7.1 and the cDAQ-9174. In order to use the cDAQ-9174 you will need to upgrade to a newer version of LabVIEW and at least DAQmx 9.0.2.
Regards,
Barron
Applications Engineering
National Instruments