Java EE (Java Enterprise Edition) General Discussion

Hi, everyone
I am currently developing an application that prints out the result of some calculations.
from a Javascript file, the output finally ends up in a java applet that should print the file in a special printer.
For debugging purposes I have created a File printer that creates a file from the output comming to the printer; this way I can debug what commands the printer is receiving.
This worked well on Windows Xp; Vista always asks for permissions for the applet, and altough I guarantee these permissions, printer is not allowed to create the output file and reports an error writing
after a little research, I have found that java applets have all permissions when certificated as trusted applications; all but file creating permissions
anyone has any idea of how could I fix this problem?
Thanks in advance