Conseguir:
<?php $usuario =& JFactory::getUser(); ?>
Dai no lugar onde eu quero que saia:
<?php echo base64_encode($usuario->name); ?>
Vlw <!-- s:ugeek: --><img src="{SMILIES_PATH}/icon_e_ugeek.gif" alt=":ugeek:" title="Uber Geek" /><!-- s:ugeek: -->
