diff --git a/calendar/inc/hook_about.inc.php b/calendar/inc/hook_about.inc.php
deleted file mode 100644
index 72d004f6b4..0000000000
--- a/calendar/inc/hook_about.inc.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-    /**************************************************************************\
-    * phpGroupWare - about                                                     *
-    * http://www.phpgroupware.org                                              *
-    * --------------------------------------------                             *
-    * This program is free software; you can redistribute it and/or modify it  *
-    * under the terms of the GNU General Public License as published by the    *
-    * Free Software Foundation; either version 2 of the License, or (at your   *
-    * option) any later version.                                               *
-    \**************************************************************************/
-    /* $Id$ */
-
-	function about_app($tpl,$handle)
-	{
-		$t = CreateObject('phpgwapi.Template',$GLOBALS['phpgw']->common->get_tpl_dir('phpgwapi'));
-		$s = $t->set_file(array('about' => 'about_app.tpl'));
-		$s .= $t->set_var('app_title',lang('calendar'));
-		$s .= $t->set_var('lang_version',lang('Version'));
-		$s .= $t->set_var('app_version',$GLOBALS['phpgw_info']['apps']['calendar']['version']);
-		$s .= $t->set_var('based_on',lang('based on'));
-		$s .= $t->set_var('written_by',lang('written by'));
-		$s .= $t->set_var('source','Webcalendar by Craig Knudsen &lt;cknudsen@radix.net&gt;');
-		$s .= $t->set_var('source_url','http://www.radix.net/~cknudsen');
-		$s .= $t->set_var('source_url_name','www.radix.net/~cknudsen');
-		$s .= $t->set_var('developers','Mark Peters &lt;skeeter@phpgroupware.org&gt;');
-		$s .= $t->fp('out','about');
-		return $s;
-	}
diff --git a/calendar/setup/setup.inc.php b/calendar/setup/setup.inc.php
index 85bdfe56e2..a1167e73b4 100755
--- a/calendar/setup/setup.inc.php
+++ b/calendar/setup/setup.inc.php
@@ -22,6 +22,9 @@
 		'Powerful calendar with meeting request system and ACL security.';
 	$setup_info['calendar']['maintainer'] = 'Mark Peters';
 	$setup_info['calendar']['maintainer_email'] = 'skeeter@phpgroupware.org';
+	$setup_info['calendar']['based_on'] = 
+		'Webcalendar by <a href="mailto:cknudsen@radix.net">Craig Knudsen</a>';
+	$setup_info['calendar']['based_on_url'] = 'http://www.radix.net/~cknudsen';
 
 	$setup_info['calendar']['tables'][] = 'phpgw_cal';
 	$setup_info['calendar']['tables'][] = 'phpgw_cal_holidays';