Joomla! should be installed in the root domain folder (i.e. http://site.com, not http://site.com/joomla/), phpBB should be installed in the first-level domain folder (i.e. http://site.com/phpBB3, not http://site.com/joomla/phpBB3/, not http://site.com) Hello, I was wondering if using a subdomain ...