Output Signal From a Desktop Flash application to the COM port

How do I script to connect /send a signal to the COM port of
the PC from a Desktop Flash application.
The Signals can be variables such as "1/2/3/4" . The signals
will be send on a corresponding click in the flash application. For
eg: if I click button "A" in the Flash application, it sends a
signal "1" to the COM Port. If I click the Button"B", it send the
signal"2" to the COM Port.
Please advise if it can be done directly or through a Third
Party software.

maybe this helps:
http://www.phidgets.com/downloads.php?example_id=27

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    maybe this helps:
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