A LabVIEW executable is an executable like any other executable. As long as the LabVIEW Run-Time Engine is installed you can call it from within an Excel macro using the Shell() command as in Call Shell(executable).
(EDIT: Accidentally clicked Post before I had finished)
OR, are you trying to call it using ActiveX with LabVIEW as an ActiveX server?
I believe this questions belongs more to some kind of MS Office software (specifically Excel), than to this forum. I think you should assing a macro to the button and you should call the exe through the macro command.
The macro command should look like this:
RetVal = Shell("C:\Program Files\National Instruments\LabVIEW 2009\LabVIEW.exe", 1)
Remember, you must have macros enabled.
Thank you SMercurio:
I just wanted to run a Labview application.
Now, I would like to minimize it or make the Labview application invisible...and quit after the app runs...
Thanks for your response, I'll look at freqresp.xls