I'd tested with the new snapshot and it really worked
fine!!!! Now,
only the OS/X snapshot remains with the problems.
Henrique 
Mac OS-X is really Unix with an Apple veneer on top.  The file 
.profile is a hidden Unix file that contains basic information for 
the shell that runs most programs.  Textedit (the Apple editor) will 
edit hidden files if (a) you have administrative privileges (which is 
likely if you are the sole user), (b) you use the terminal rather 
than the standard graphical interface.  Do a Google search on "edit 
hidden files in OS-X" and you will find articles with appropriate 
instructions - eg 
http://www.tech-recipes.com/rx/2618/os_x_easily_edit_hidden_configuration...
.
But, I am surprised that this is necessary.  The International 
configuration under System Preferences should set up the language 
preferences to cope with Brazilian Portuguese files.  Check that the 
box for Portugues (Brasil) is ticked in the list of language options 
- I assume that it is since you say that you can see files with 
accented file names in other programs.  Also check that the 
associated configuration variables are correct.
Gordon