Close folder based on file opening

[frank]

I want to create a toolbar that will open up a folder view with Windows Explorer.

The hard part is, the window will close when I open any file within it.

So that I don't end up with a dozen Windows Explorer windows, I'd like these particular ones that are launched from this toolbar to close when a file within them is opened.

Can this be done?

I got as far the toolbar and command:
run "F:\!Files"

thanks for any help