Hey Bullitt54,
Windows Vista is compatible with DAQmx version 8.5 and up and any version of Signal Express, so you should be fine as far as versions go. Did you previously try and install an older version of DAQmx on your laptop and did you have any trouble doing this? This could cause issues and if so there are some steps we can take.
Here are some other suggestions:
1) Check the firmware that is loaded on the device. We want to make sure we have the DAQmx firmware.
Using a USB-6008 / 6009 / 6501 in MAX, and Switching Firmware Between NI-DAQmx and NI-DAQmx Base
http://digital.ni.com/public.nsf/allkb/1448A8AC665EE0EA8625703F004A4410?OpenDocument2) Try the device in a different USB port.
3) Repair your DAQmx installation.
Regards,
Chris Delvizis
National Instruments