Index: branches/5.1.x/units/private_messages/private_messages_config.php
===================================================================
diff -u -N -r13155 -r13577
--- branches/5.1.x/units/private_messages/private_messages_config.php	(.../private_messages_config.php)	(revision 13155)
+++ branches/5.1.x/units/private_messages/private_messages_config.php	(.../private_messages_config.php)	(revision 13577)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: private_messages_config.php 13155 2010-02-23 20:10:29Z alex $
+* @version	$Id: private_messages_config.php 13577 2010-05-19 07:24:12Z alex $
 * @package	In-Bulletin
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -76,8 +76,8 @@
 				'Body' => 'pmb.Body',
 				'Options' => 'pmb.Options',
 
-				'FromName' => 'IF (ISNULL(from_user.Login), IF (%1$s.FromId = -1, "root", IF (%1$s.FromId = -2, "Guest", "n/a")), from_user.Login)',
-				'ToName' => 'IF (ISNULL(to_user.Login), IF (%1$s.ToId = -1, "root", IF (%1$s.ToId = -2, "Guest", "n/a")), to_user.Login)',
+				'FromName' => 'IF (ISNULL(from_user.Login), IF (%1$s.FromId = ' . USER_ROOT . ', "root", IF (%1$s.FromId = ' . USER_GUEST . ', "Guest", "n/a")), from_user.Login)',
+				'ToName' => 'IF (ISNULL(to_user.Login), IF (%1$s.ToId = ' . USER_ROOT . ', "root", IF (%1$s.ToId = ' . USER_GUEST . ', "Guest", "n/a")), to_user.Login)',
 
 				'FromFullName' => 'TRIM(CONCAT(from_user.FirstName, " ", from_user.LastName))',
 				'ToFullName' => 'TRIM(CONCAT(to_user.FirstName, " ", to_user.LastName))',