LabVIEW 7.1 only works with version 7.4 or earlier. It does NOT support NI-DAQmx (introduced with LabVIEW 8). If you have modern DAQ hardware, you must use a newer LabVIEW.
: Featured single-cycle While Loops that could execute functions within a 25ns tick. Labview 7.1 Download
While the full installer is restricted, some patches and drivers for version 7.1 are still hosted on NI's public servers: LabVIEW 7.1.1 Update: The readme for the 7.1.1 patch is available on LabVIEW 7