Welcome to Elxis Community, You can change the footer area as you wish by modifying the index.php file under the folder : templates/your_template/You can't change the logo from administrator area.Ιt's forbidden
You can find something like : <div align="center"> <?php include_once($mainframe->getCfg('absolute_path').'/includes/footer.php'); ?> </div>Just change that to : <div align="center"> Powered by alinux! </div>
You can see the published modules at : [administrator area ] top menu : modules -> site modules.More Documentation at Elxis Wiki : http://wiki.elxis.org/wiki/Main_Page