Warning: require_once(ThinkPHP/ThinkPHP.php) [function.require-once]: failed to open stream: No such file or directory in D:\wwwroot\apawood\wwwroot\index.php on line 14

Fatal error: require_once() [function.require]: Failed opening required 'ThinkPHP/ThinkPHP.php' (include_path='.;C:\php5\pear') in D:\wwwroot\apawood\wwwroot\index.php on line 14