[etc]

http://www.multidmedia.com/

http://livedocs.macromedia.com/flash.../00001727.html

The exec command runs in the subdirectory fscommand only. In other words, if you use the exec command to call an application, the application must reside in a subdirectory named fscommand. The exec command works only from within a Flash projector file.

http://livedocs.macromedia.com/flash.../00002665.html