Greetings Jocher,
NI-DAQ 6.1 was the last version of NI-DAQ to support the AT-MIO-16X device. So you will have to make sure you have NI-DAQ 6.1 or previous installed to install/configure the AT-MIO-16X device.
NI-DAQ 6.1 included support for LabVIEW 5.x, LabVIEW 4.x, and LabVIEW 3.x. There is a document (linked below) that illustrates how to install older versions of NI-DAQ with LabVIEW 6.x versions.
How Do I Use Older Versions of NI-DAQ (6.8 or Earlier) with LabVIEW 6.x?
http://digital.ni.com/public.nsf/websearch/F7D5934AF18EAA038625694600453DF2?OpenDocument
If you have LabVIEW 7, I would suggest to upgrade your hardware so you can use LabVIEW 7 and NI-DAQ 7.x with your hardware. NI-DAQ 7.x and LabVIEW 7 have some great features that allow for quick
and easy data acquisition programming. Our basic multifunction devices are inexpensive with tons of functionality and are supported under NI-DAQ 7.1. I have linked to these devices below for a reference.
NI 6013
http://sine.ni.com/apps/we/nioc.vp?cid=11441〈=US
I hope this helps. Let me know if you have any additional questions.
Regards,
Todd D.
NI Applications Engineer