Actionscript Write

Hi there
I am new to this. I have a flash site with a user registration page. When user click 'register', I want to exit cleanly and save an encrypted id in the user folder.

Something like c:\user\$user\roaming\$myapplication\registered.da t, where $TheApplication is my web application, and
registered.dat is an encrypted file containing user id, and last session date

1) Can flash write to c:\user\$user\roaming\$myapplication folder
2) Can it write without further prompt


Any great ideas will be appreciated

Check out the SharedObject class.
http://help.adobe.com/en_US/FlashPla...redObject.html