Conditional for running under GUI?

[digit]

Forgive me if this has been asked before, but is there a way to check if the VBP script is running under the GUI or console? There are a few confirm popup dialogs (via VBScript) in my script, but I'd like to silence these for console builds.

I could pass in a temp macro "QUIET" or something, but I'm wondering if there is a cleaner way.

Thanks!