When i tried to install coop to my phpBB 3.x forum i found it difficult, because on forums i found no information about phpBB 3.x installation. When i installed coop on phpBB 2.x i found no difficults, because all information can be found here http://www.digitalpoint.com/tools/ad-network/setup.php?type=4 So as i said there was no information about phpBB 3.x installation, then i gone into phpBB 3.x source code i was comparing it with phpBB 2.x and finally found the way how it can be installed. Ofcourse, to find out it taken some time, but installation is same easy as phpBB 2.x Probably the begining is same as phpBB 2.x you create a ad_network_x.php file then ad_network_ads_x.txt just do everything what is shown at http://www.digitalpoint.com/tools/ad-network/setup.php?type=4 until you come up to 3part. What changes needs to do: leave code same, only the place where to paste code changes. 3part. Add the following to your includes/functions.php file (before this line: $template->display('body'); ): include ($phpbb_root_path . 'ad_network_x.php'); $template->assign_vars(array('AD_NETWORK' => $ad_network)); Code (markup): 4part. Add the following to your overall_footer.html file ( somewhere appropriate ): {AD_NETWORK} Code (markup): overall_footer.html can be found at: styles/subsilver2*/template/ or you can edit it at admin panel *i use subsilver2 your might be different. 5,6,7part same as in phpBB 2.x http://www.digitalpoint.com/tools/ad-network/setup.php?type=4 Thats it you installed coop to your phpBB 3.x. Here you can see installed coop to my phpBB 3.x forum http://www.crusaderextreme.com/ Sorry for my english, despite many grammar mistakes, i think you understood how to install