Warning: require(./thinkphp/setup.php) [function.require]: failed to open stream: No such file or directory in D:\www.xing3.cn\install.php on line 11

Fatal error: require() [function.require]: Failed opening required './thinkphp/setup.php' (include_path='.;C:\php5\pear') in D:\www.xing3.cn\install.php on line 11