Warning: require(lang/eng.inc.php) [function.require]: failed to open stream: No such file or directory in C:\OPAC\apache\htdocs\index.php on line 27

Fatal error: require() [function.require]: Failed opening required 'lang/eng.inc.php' (include_path='.;C:\php5\pear') in C:\OPAC\apache\htdocs\index.php on line 27