The drivers for your DAQ card should have come with the board and come with CVI 7.0. If you still need to download the driver though, the DAQ E-series boards are supported through the NI-DAQ driver software. If you are using CVI 7.0, you need DAQmx 7.0.1 which you can get it here. If you are not using the current version of CVI, but are using a previous version, you need NI-DAQ 6.9.3 which you can get here.
Best Regards,
Chris Matthews
National Instruments
