in reply to Re^6: How do I communicate with a Windows process?
in thread How do I communicate with a Windows process?

Indeed.

Or you can call Win32::SetChildShowWindow( 0 ) prior to calling system.

But mention of the CGI aspect of the problem in the OP would have been nice. And why a flicker on a (usually unattended) webserver screen is a problem.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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In Section Seekers of Perl Wisdom