diff --git a/admin/include/functions_install.inc.php b/admin/include/functions_install.inc.php
index 65b1a24d6..166ed6b7d 100644
--- a/admin/include/functions_install.inc.php
+++ b/admin/include/functions_install.inc.php
@@ -86,20 +86,41 @@ function available_engines()
 
   foreach ($dblayers as $engine_name => $engine)
   {
-    if (file_exists(sprintf($pattern, $engine_name)) 
-	&& isset($engine['function_available'])
-	&& function_exists($engine['function_available']))
+    if (file_exists(sprintf($pattern, $engine_name))) 
     {
-      $engines[$engine_name] = $engine['engine'];
-    }
-    elseif (file_exists(sprintf($pattern, $engine_name)) 
-	    && isset($engine['class_available'])
-	    && class_exists($engine['class_available']))
-    {
-      $engines[$engine_name] = $engine['engine'];
+      $engines[$engine_name]['label'] = $engine['engine'];
+      $engines[$engine_name]['available'] = 'disabled';
+
+      if (isset($engine['function_available'])
+	  && function_exists($engine['function_available']))
+      {
+	$engines[$engine_name]['available'] = true;
+      }
+      elseif (isset($engine['class_available']) 
+	      && class_exists($engine['class_available']))
+      {
+	$engines[$engine_name]['available'] = true;
+      } 
     }
   }
+
+  if (count($engines)>1)
+  {
+    $engines[$GLOBALS['conf']['dbengine_select_default']]['selected'] = true;
+  }
   
+  if ($engines['sqlite']['available'] && $engines['pdo-sqlite']['available'])
+  {
+    if ($GLOBALS['conf']['db_sqlite_default']=='native')
+    {
+      unset($engines['pdo-sqlite']);
+    }
+    else 
+    {
+      unset($engines['sqlite']);
+    }
+  }
+
   return $engines;
 }
 ?>
\ No newline at end of file
diff --git a/admin/template/goto/include/install.inc.tpl b/admin/template/goto/include/install.inc.tpl
new file mode 100644
index 000000000..b153f0f30
--- /dev/null
+++ b/admin/template/goto/include/install.inc.tpl
@@ -0,0 +1,19 @@
+<script type="text/javascript" src="template-common/lib/jquery.packed.js"></script>
+{literal}
+<script type="text/javascript">
+$(function() {
+    $option_selected = $('#dblayer option:selected').attr('value');
+    if ($option_selected=='sqlite' || $option_selected=='pdo-sqlite') {
+       $('input[name=dbhost],input[name=dbuser],input[name=dbpasswd]').parent().parent().hide();
+    }
+    $('#dblayer').change(function() {
+        $db = this;
+        if ($db.value=='sqlite' || $db.value=='pdo-sqlite') {
+           $('input[name=dbhost],input[name=dbuser],input[name=dbpasswd]').parent().parent().hide();
+        } else {
+           $('input[name=dbhost],input[name=dbuser],input[name=dbpasswd]').parent().parent().show();
+        }
+      });
+  });
+</script>
+{/literal}
diff --git a/admin/template/goto/install.tpl b/admin/template/goto/install.tpl
index 6976d8ccc..2b83d3bf4 100644
--- a/admin/template/goto/install.tpl
+++ b/admin/template/goto/install.tpl
@@ -9,6 +9,7 @@
 <link rel="stylesheet" type="text/css" href="{$ROOT_URL}admin/template/{$themeconf.template}/layout.css">
 <link rel="stylesheet" type="text/css" href="{$ROOT_URL}admin/template/{$themeconf.template}/default-colors.css">
 <link rel="stylesheet" type="text/css" href="{$ROOT_URL}admin/template/{$themeconf.template}/theme/{$themeconf.theme}/theme.css">
+{include file="include/install.inc.tpl"}
 {literal}
 <style type="text/css">
 .content {
@@ -88,8 +89,13 @@ TD {
     <tr>
       <td style="width: 30%;">{'step1_dbengine'|@translate}</td>
       <td>
-	<select name="dblayer">
-	  {html_options options=$F_DB_ENGINES selected=$F_DB_LAYER}
+	<select name="dblayer" id="dblayer">
+	  {foreach from=$F_DB_ENGINES key=k item=v}
+	  <option value="{$k}"
+		  {if $k==$F_DB_LAYER or $v.selected} selected="selected"{/if}
+		  {if $v.available!=1} disabled="disabled"{/if}
+		  >{$v.label}</option>
+	  {/foreach}
 	</select>    
       </td>
       <td>{'step1_dbengine_info'|@translate}</td>
diff --git a/admin/template/goto/theme/roma/theme.css b/admin/template/goto/theme/roma/theme.css
index 0116283b0..85356582a 100644
--- a/admin/template/goto/theme/roma/theme.css
+++ b/admin/template/goto/theme/roma/theme.css
@@ -2,6 +2,7 @@
 body, h3, dt, h2, .throw, .content, label,
 input.rateButtonSelected /* <= why IE doesn't inherit this ? */ { color:#666; }
 INPUT, select, textarea { color:#999; background-color: #444; }  
+option[disabled] { background-color: #999; color: #444; }
 input[type="radio"], input[type="checkbox"] { background-color: transparent; }  
 /* INPUT[type="checkbox"], INPUT[type="radio"]
 { color:#999; background-color: #eee; }  */
diff --git a/include/config_default.inc.php b/include/config_default.inc.php
index c685002bb..972d89ea5 100644
--- a/include/config_default.inc.php
+++ b/include/config_default.inc.php
@@ -520,6 +520,16 @@ $conf['user_fields'] = array(
   'email' => 'mail_address'
   );
 
+// database engine default choice between sqlite (native or via pdo)
+// if the twice are available.
+// $conf['db_sqlite_default'] = 'pdo'; 
+$conf['db_sqlite_default'] = 'native'; 
+
+// default database engine proposed if severals are available
+// choices : sqlite, mysql, pgsql, pdo-sqlite
+// see include/dblayer/dblayers.inc.php
+$conf['dbengine_select_default'] = 'sqlite'; 
+
 // pass_convert : function to crypt or hash the clear user password to store
 // it in the database
 $conf['pass_convert'] = create_function('$s', 'return md5($s);');