You cannot modify the files of the core. You have to provide a way to upload content, images, HTML and so on. Actually i guess that in your scenario you don't even need to use the theme Layout. You just need to create a smart theme, where it will construct the URL based on the logged-in user. (including the username in the path for example) But first you need to give them a way to uplad files on the server. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027981#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...