Hi,
The following webpage shows the supported interfaces that DIAdem supports:
http://www.ni.com/support/diadem/diainter.htm
I'm not sure if this is what you are looking for, but the closest thing would be to create your own GPI interface to import your data.
You can't change the functionality of File >> Open. It will always pop up a dialog asking you to select a file and file type. The GPI module just allows you to open different types of files, which you can define with your own custom GPI dll.
You can find more information and a the DIAdem Version 9.0 for Windows--GPI Toolkit at the following URL:
http://digital.ni.com/softlib.nsf/websearch/D605AA96CF81760C86256C7600742EC5?opendocument&node=132060_US
Please let me know if I can be of
further assistance.
Matt P.
Applications Engineer
National Instruments