Hello d.halbig,
If you are using PCI-6025E and Lab-PC-1200 cards on the same computer, the latest driver that you can use is 6.9.3.
If you go to the following link,
http://www.ni.com/support/daq/versions.htm
you will notice that NI-DAQ 7.2 is recommended for PCI-6025E and NI-DAQ 6.9.3 for Lab-PC-1200 on Windows NT. So you can only use NI-DAQ 6.9.3 if both used on the same computer.
PCI-6025E is supported in DAQ-Traditional and DAQmx (for NI-DAQ 7.0 and higher), but with NI-DAQ 6.9.3, you will only be able to use DAQ-Traditional with PCI-6025E.
About sequence to follow, uninstall older NI-DAQ and older LabVIEW first. Then install LabVIEW 7.1 and then NI-DAQ 6.9.3.
Good luck with your project. Thank you for choosing National Instrumen
ts !
Swapnil P.
National Instruments Engineer