You can integrate many forum applications with Joomla 1.5 using the JFusion component. It is installed as any other Joomla 1.5 component and with it you can easily integrate SMF, phpBB 3, vBulletin and several other board applications with Joomla 1.5.x.

More information on how to manage your Joomla 1.5 is available in our tutorial.