diff --git a/phpBB/docs/INSTALL.html b/phpBB/docs/INSTALL.html
index 81e6f36e1b..7a86f67bff 100644
--- a/phpBB/docs/INSTALL.html
+++ b/phpBB/docs/INSTALL.html
@@ -136,15 +136,15 @@
 		<li>A webserver or web hosting account running on any major Operating System with support for PHP</li>
 		<li>A SQL database system, <strong>one of</strong>:
 		<ul>
-			<li>MySQL 3.23 or above (MySQLi supported)</li>
-			<li>PostgreSQL 7.3+</li>
-			<li>SQLite 2.8.2+</li>
-			<li>Firebird 2.0+</li>
+			<li>MySQL(i): 4.1 or above</li>
+			<li>PostgreSQL: 8.2+</li>
+			<li>SQLite: 2.8.2+</li>
+			<li>Firebird: 2.0+</li>
 			<li>MS SQL Server 2000 or above (directly or via ODBC)</li>
-			<li>Oracle</li>
+			<li>Oracle: 9.2+</li>
 		</ul>
 		</li>
-		<li><strong>PHP 4.3.3+ (>=4.3.3, >4.4.x, >5.x.x, >6.0-dev (compatible))</strong> with support for the database you intend to use.</li>
+		<li><strong>PHP 5.2.0+ </strong> with support for the database you intend to use.</li>
 		<li>getimagesize() function need to be enabled.</li>
 		<li>These optional presence of the following modules within PHP will provide access to additional features, but they are not required.
 		<ul>
diff --git a/phpBB/includes/core/core.php b/phpBB/includes/core/core.php
index 09b6365da2..36fef1fccc 100644
--- a/phpBB/includes/core/core.php
+++ b/phpBB/includes/core/core.php
@@ -100,6 +100,16 @@ abstract class phpbb
 		'installed'			=> false,
 	);
 
+	/**
+	* @var array Last notice occurred in message handler
+	*/
+	public static $last_notice = array(
+		'file'		=> '',
+		'line'		=> 0,
+		'message'	=> '',
+		'errno'		=> E_NOTICE,
+	);
+
 	/**#@+
 	* Permission constant
 	*/
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 1f6e7bcae7..e304edee0c 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2006,18 +2006,27 @@ function msg_handler($errno, $msg_text, $errfile, $errline)
 {
 	global $msg_title, $msg_long_text;
 
-	// Do not display notices if we suppress them via @
-	if (error_reporting() == 0)
-	{
-		return;
-	}
-
 	// Message handler is stripping text. In case we need it, we are able to define long text...
 	if (isset($msg_long_text) && $msg_long_text && !$msg_text)
 	{
 		$msg_text = $msg_long_text;
 	}
 
+	// Store information for later use
+	phpbb::$last_notice = array(
+		'file'		=> $errfile,
+		'line'		=> $errline,
+		'message'	=> $msg_text,
+		'php_error'	=> (!empty($php_errormsg)) ? $php_errormsg : '',
+		'errno'		=> $errno,
+	);
+
+	// Do not display notices if we suppress them via @
+	if (error_reporting() == 0)
+	{
+		return;
+	}
+
 	switch ($errno)
 	{
 		case E_NOTICE:
diff --git a/phpBB/includes/functions_install.php b/phpBB/includes/functions_install.php
index 16c10312ce..53be92ac14 100644
--- a/phpBB/includes/functions_install.php
+++ b/phpBB/includes/functions_install.php
@@ -70,8 +70,8 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_30
 			'3.0.x'			=> true,
 		),
 		'mssql_2005'=>	array(
-			'LABEL'			=> 'MS SQL Server [ 2005 ]',
-			'MODULE'		=> 'sqlsrv',
+			'LABEL'			=> 'MS SQL Server [ 2005/2008 ]',
+			'MODULE'		=> array('sqlsrv', 'sqlsrv_ts'),
 			'DRIVER'		=> 'mssql_2005',
 			'AVAILABLE'		=> true,
 			'3.0.x'			=> true,
@@ -118,6 +118,8 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_30
 		}
 	}
 
+	$any_db_support = false;
+
 	// now perform some checks whether they are really available
 	foreach ($available_dbms as $db_name => $db_ary)
 	{
@@ -136,21 +138,34 @@ function get_available_dbms($dbms = false, $return_unavailable = false, $only_30
 
 		$dll = $db_ary['MODULE'];
 
-		if (!@extension_loaded($dll))
+		if (!is_array($dll))
 		{
-			if (!can_load_dll($dll))
+			$dll = array($dll);
+		}
+
+		$is_available = false;
+		foreach ($dll as $test_dll)
+		{
+			if (@extension_loaded($test_dll) || can_load_dll($test_dll))
 			{
-				if ($return_unavailable)
-				{
-					$available_dbms[$db_name]['AVAILABLE'] = false;
-				}
-				else
-				{
-					unset($available_dbms[$db_name]);
-				}
-				continue;
+				$is_available = true;
+				break;
 			}
 		}
+
+		if (!$is_available)
+		{
+			if ($return_unavailable)
+			{
+				$available_dbms[$db_name]['AVAILABLE'] = false;
+			}
+			else
+			{
+				unset($available_dbms[$db_name]);
+			}
+			continue;
+		}
+
 		$any_db_support = true;
 	}
 
@@ -343,21 +358,21 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 		case 'mysql':
 			if (version_compare($db->sql_server_info(true), '4.1.3', '<'))
 			{
-				$error[] = phpbb::$user->lang['INST_ERR_DB_NO_MYSQL'];
+				$error[] = phpbb::$user->lang['INST_ERR_DB_MYSQL_VERSION'];
 			}
 		break;
 
 		case 'mysqli':
 			if (version_compare($db->sql_server_info(true), '4.1.3', '<'))
 			{
-				$error[] = phpbb::$user->lang['INST_ERR_DB_NO_MYSQLI'];
+				$error[] = phpbb::$user->lang['INST_ERR_DB_MYSQLI_VERSION'];
 			}
 		break;
 
 		case 'sqlite':
 			if (version_compare($db->sql_server_info(true), '2.8.2', '<'))
 			{
-				$error[] = phpbb::$user->lang['INST_ERR_DB_NO_SQLITE'];
+				$error[] = phpbb::$user->lang['INST_ERR_DB_SQLITE_VERSION'];
 			}
 		break;
 
@@ -369,7 +384,7 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 				preg_match('#V([\d.]+)#', $val, $match);
 				if ($match[1] < 2)
 				{
-					$error[] = phpbb::$user->lang['INST_ERR_DB_NO_FIREBIRD'];
+					$error[] = phpbb::$user->lang['INST_ERR_DB_FIREBIRD_VERSION'];
 				}
 				$db_info = @ibase_db_info($db->service_handle, $dbname, IBASE_STS_HDR_PAGES);
 
@@ -383,9 +398,9 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 			else
 			{
 				$sql = "SELECT *
-					FROM RDB$FUNCTIONS
-					WHERE RDB$SYSTEM_FLAG IS NULL
-						AND RDB$FUNCTION_NAME = 'CHAR_LENGTH'";
+					FROM RDB\$FUNCTIONS
+					WHERE RDB\$SYSTEM_FLAG IS NULL
+						AND RDB\$FUNCTION_NAME = 'CHAR_LENGTH'";
 				$result = $db->sql_query($sql);
 				$row = $db->sql_fetchrow($result);
 				$db->sql_freeresult($result);
@@ -393,7 +408,7 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 				// if its a UDF, its too old
 				if ($row)
 				{
-					$error[] = phpbb::$user->lang['INST_ERR_DB_NO_FIREBIRD'];
+					$error[] = phpbb::$user->lang['INST_ERR_DB_FIREBIRD_VERSION'];
 				}
 				else
 				{
@@ -402,7 +417,7 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 					$result = $db->sql_query($sql);
 					if (!$result) // This can only fail if char_length is not defined
 					{
-						$error[] = phpbb::$user->lang['INST_ERR_DB_NO_FIREBIRD'];
+						$error[] = phpbb::$user->lang['INST_ERR_DB_FIREBIRD_VERSION'];
 					}
 					$db->sql_freeresult($result);
 				}
@@ -456,7 +471,7 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 
 			if (version_compare($stats['NLS_RDBMS_VERSION'], '9.2', '<'))
 			{
-				$error[] = phpbb::$user->lang['INST_ERR_DB_NO_ORACLE'];
+				$error[] = phpbb::$user->lang['INST_ERR_DB_ORACLE_VERSION'];
 			}
 
 			if ($stats['NLS_CHARACTERSET'] !== 'AL32UTF8')
@@ -466,14 +481,22 @@ function connect_check_db($dbms_details, $table_prefix, $dbhost, $dbuser, $dbpas
 		break;
 
 		case 'postgres':
-			$sql = "SHOW server_encoding;";
-			$result = $db->sql_query($sql);
-			$row = $db->sql_fetchrow($result);
-			$db->sql_freeresult($result);
 
-			if ($row['server_encoding'] !== 'UNICODE' && $row['server_encoding'] !== 'UTF8')
+			if (version_compare($db->sql_server_info(true), '8.2', '<'))
 			{
-				$error[] = phpbb::$user->lang['INST_ERR_DB_NO_POSTGRES'];
+				$error[] = phpbb::$user->lang['INST_ERR_DB_POSTGRES_VERSION'];
+			}
+			else
+			{
+				$sql = "SHOW server_encoding;";
+				$result = $db->sql_query($sql);
+				$row = $db->sql_fetchrow($result);
+				$db->sql_freeresult($result);
+
+				if ($row['server_encoding'] !== 'UNICODE' && $row['server_encoding'] !== 'UTF8')
+				{
+					$error[] = phpbb::$user->lang['INST_ERR_DB_NO_POSTGRES_UTF8'];
+				}
 			}
 		break;
 
diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index 001acc4584..eb61be1f46 100644
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -769,7 +769,8 @@ class install_install extends module
 		// Create a list of any PHP modules we wish to have loaded
 		$load_extensions = array();
 		$available_dbms = get_available_dbms($data['dbms']);
-		$check_exts = array_merge(array($available_dbms[$data['dbms']]['MODULE']), $this->php_dlls_other);
+
+		$check_exts = array_merge($this->php_dlls_other);
 
 		foreach ($check_exts as $dll)
 		{
@@ -784,6 +785,37 @@ class install_install extends module
 			}
 		}
 
+		$db_module = $available_dbms[$data['dbms']]['MODULE'];
+
+		if (!is_array($db_module))
+		{
+			$db_module = array($db_module);
+		}
+
+		$load_dll = true;
+		foreach ($db_module as $dll)
+		{
+			if (@extension_loaded($dll))
+			{
+				$load_dll = false;
+				break;
+			}
+
+			if (!can_load_dll($dll))
+			{
+				$load_dll = false;
+				break;
+			}
+
+			$load_dll = true;
+		}
+
+		if ($load_dll)
+		{
+			$dll = current($db_module);
+			$load_extensions[] = $dll . '.' . PHP_SHLIB_SUFFIX;
+		}
+
 		// Create a lock file to indicate that there is an install in progress
 		$fp = @fopen(PHPBB_ROOT_PATH . 'cache/install_lock', 'wb');
 		if ($fp === false)
diff --git a/phpBB/language/en/install.php b/phpBB/language/en/install.php
index de117098e2..99b608e326 100644
--- a/phpBB/language/en/install.php
+++ b/phpBB/language/en/install.php
@@ -230,14 +230,15 @@ $lang = array_merge($lang, array(
 	'INST_ERR_DB_CONNECT'		=> 'Could not connect to the database, see error message below.',
 	'INST_ERR_DB_FORUM_PATH'	=> 'The database file specified is within your board directory tree. You should put this file in a non web-accessible location.',
 	'INST_ERR_DB_NO_ERROR'		=> 'No error message given.',
-	'INST_ERR_DB_NO_MYSQL'		=> 'The version of MySQL installed on the target server must be at least 4.1, phpBB 3.1 cannot be installed on an older version.',
-	'INST_ERR_DB_NO_MYSQLI'		=> 'The version of MySQL installed on the target server must be at least 4.1, phpBB 3.1 cannot be installed on an older version.',
-	'INST_ERR_DB_NO_SQLITE'		=> 'The version of the SQLite extension you have installed is too old, it must be upgraded to at least 2.8.2.',
-	'INST_ERR_DB_NO_ORACLE'		=> 'The version of Oracle installed on the target server must be at least 9.2, phpBB 3.1 cannot be installed on an older version.',
-	'INST_ERR_DB_NO_ORACLE_NLS'	=> 'You must configure Oracle so that the <var>NLS_CHARACTERSET</var> parameter is set to <var>ALU32UTF8</var>.',
-	'INST_ERR_DB_NO_FIREBIRD'	=> 'The version of Firebird installed on this machine is older than 2.0, please upgrade to a newer version.',
-	'INST_ERR_DB_NO_FIREBIRD_PS'=> 'The database you selected for Firebird has a page size less than 8192, it must be at least 8192.',
-	'INST_ERR_DB_NO_POSTGRES'	=> 'The database you have selected was not created in <var>UNICODE</var> or <var>UTF8</var> encoding. Try installing with a database in <var>UNICODE</var> or <var>UTF8</var> encoding.',
+
+	'INST_ERR_DB_MYSQL_VERSION'		=> 'The version of MySQL installed on the target server must be at least 4.1, phpBB 3.1 cannot be installed on an older version.',
+	'INST_ERR_DB_SQLITE_VERSION'	=> 'The version of the SQLite extension you have installed is too old, it must be upgraded to at least 2.8.2.',
+	'INST_ERR_DB_ORACLE_VERSION'	=> 'The version of Oracle installed on the target server must be at least 9.2, phpBB 3.1 cannot be installed on an older version.',
+	'INST_ERR_DB_FIREBIRD_VERSION'	=> 'The version of Firebird installed on this machine is older than 2.0, please upgrade to a newer version.',
+	'INST_ERR_DB_POSTGRES_VERSION'	=> 'The version of PostgreSQL installed on this machine is older than 8.2, please upgrade to a newer version.',
+	'INST_ERR_DB_NO_ORACLE_NLS'		=> 'You must configure Oracle so that the <var>NLS_CHARACTERSET</var> parameter is set to <var>ALU32UTF8</var>.',
+	'INST_ERR_DB_NO_FIREBIRD_PS'	=> 'The database you selected for Firebird has a page size less than 8192, it must be at least 8192.',
+	'INST_ERR_DB_NO_POSTGRES_UTF8'	=> 'The database you have selected was not created in <var>UNICODE</var> or <var>UTF8</var> encoding. Try installing with a database in <var>UNICODE</var> or <var>UTF8</var> encoding.',
 	'INST_ERR_DB_NO_NAME'		=> 'No database name specified.',
 	'INST_ERR_EMAIL_INVALID'	=> 'The e-mail address you entered is invalid.',
 	'INST_ERR_EMAIL_MISMATCH'	=> 'The e-mails you entered did not match.',