Elias
You should be able to install nidaq 6.9.2 without a problem. If the installation doesn't work from the CD, does it work if you download the file from ftp://ftp.ni.com/support/daq/pc/ni-daq/ and install it from there. Make sure you include the LabVIEW support file. Furthermore, if you still have issues, let us know what the error message and number that you get is.
Hope this information is helpful.
L Aguila
Applications Engineer
National Instruments