Hi!
Some guys email me that in Portuguese is difficult understand the block and the metadata modules in the link I send... If someone have the same “problem”, use the English view and the help will appear in English:
http://www.vgportal.ipb.pt/vgportal/moodle/index.php?lang=en_utf8 (and select course 
Recursos, Actividades e Metadados)
I think this is enough to understand the idea.
I hope now can appear some feedback…
Thanks...