This is a Joomla! question. In J! 1.5.x a,d 1.0.x add a new user position into you Joomla! template .xml file, something that is easy to spot, such as user_xxx Then publish the module you wish to display in maincontent to that user position. Then create a new article or static page containing {loadposition user_xxx} - or {mosloadposition user_xxx} in Joomla 1.0.x