Is it possible to write a sub that would make visible (Excel.Visible=True)
various instances of Excel applications that are currently running invisible?

I'm debugging a VB program that opens a new Excel application and keeps it
invisible (Excel.Visible-False) while processing data, and then closes it
(Excel.Quit). As I am debugging it, I often interrupt the program (because
of exceptions, etc.) before it quits Excel, and I subsequently find in the
Task Manager numerous Excel applications running, but they are all invisible,
so I can't look at them or close them easily.

I know you can access one Excel app using GetObject(,"Excel.Application"),
but is there a way to loop through all of the Excel apps running to make each
of them visible? I can see how many are running using
Diagnostics.Process.GetProcessesByName, but I can't figure out how to make
all of them visible.
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Ed