Hi Ramón,
We'll eventually merge the public files directory into the private files directory, only the latter of which can currently be accessed using the Files Browser. In the meantime, some users have been able to circumvent this lack of access by creating a symbolic link to the public files directory from the private files directory. Once this is done, the files browser can upload files into the public files directory.
Regards,
Alec Smecher
Open Journal Systems Team
---
Don't miss the First International PKP Scholarly Publishing Conference
July 11 - 13, 2007, Vancouver, BC, Canada
http://ocs.sfu.ca/pkp2007/