Wim,
Unfortunately there's nothing you can do that will pre-populate the fields in this dialog. The data is not saved in the registry when CVI exits.
The only possible workaround I can think of would be for you to write a very simply program that will automate this step in CVI. That program need only call the CVI ActiveX GenerateFunctionTreeFromHeaderFile, and you can pass these parameters to that function. The values of the parameters can be hardcoded, if that makes sense in your case.
Luis