Saving variable to text file in standalone app

[orangejuice]

I am using flash MX and am trying to do the following:
I have a dynamic input text field, and below it a "submit" button. When the user inputs some text and clicks "submit" I want this text to be sent to and saved in an external .txt file. This is all it has to do. I know it has something to do with variables - remember that this is for a CD application (eg standalone, no server interaction) so I don't think I can use back-end scripting. Please help!

Thx.

[kidpablo]

If you find out how to do this I'd love to know

[orangejuice]

Haven't had any luck so far! Seems like this is asking the impossible of flash... Are you working on a similar application? Any luck?