I'm not the best person to answer this question Carlos, however from what I know about 
Java 
security, I don't think an APPLET can write into text files. I believe applications and console 
programs differ though. 
Don't take my word on it though. I most probably am mistaken.

Lucas

> I'm trying to insert an applet in some html pages to control the movement 
> from some users between the pages. All the pages are presented in frames 
> and one frame contains the Applet and a JavaScript Array which controls 
> the movement between the pages. When a user makes movemente the 
JavaScript 
> sends the info to the Applet, and then i wan't the Applet to write this 
> info in a txt file. I allways recieve a Security Expception error. Which 
> is the way to solve this problem?
> 
> Thanks in advance,
> 
> Carlos