open includes/page_header.php
Find : "cp_link" => ($user_info['user_level'] != ADMIN) ? "" : "\n<p align=\"center\">[<a href=\"".$site_sess->url(ROOT_PATH."admin/index.php")."\">Admin Control Panel</a>]</p>\n",
Change: Admin Control Panel to ".$lang['control_panel']."
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open lang/(your_language_dir)/main.php
Find : $lang['control_panel'] = "Control Panel";
Change to : $lang['control_panel'] = " to your language text ";
Just for display text of link to Control Panel in own user language
