Warning: require_once(mainfile.php) [function.require-once]: failed to open stream: Permission denied in C:\AppServ\www\nfecmi\lib\Lib_Sankampang\index.php on line 3

Fatal error: require_once() [function.require]: Failed opening required 'mainfile.php' (include_path='.;C:\php5\pear') in C:\AppServ\www\nfecmi\lib\Lib_Sankampang\index.php on line 3