För att få två separata flashfilmer att tala med varandra så använd LocalConnection:
http://www.actionscript.org/resources/articles/76/1/Local-Connection/Page1.html
http://www.adobe.com/support/flash/action_scripts/local_connection_objects/
http://imm.sheridanc.on.ca/imm2003/skobleni/assignments/tutorials/localConnection/
http://www.minddrops.com/Tutorials/flashmx/MovieToMovie/sender.html
/Mirandir