Hi,
I have over 8 years experience working with AS2/AS3, Java, C# and other languages/tools.
On my latest project "flash to communicate with USR TCP/RS232 converter" I had to create something similar to what you need, a Flash/Java hybrid that communicates with a Serial to LAN converter. Flash handles the UI and Java handles communications with the serial port. Flash app and Java app communicate between them with an xml socket. It won't be a problem to turn the Java code into C#. Thanks for your time and I am looking forward on working with you.
regards
takisgkois