Warning: main(../header.php) [function.main]: failed to open stream: No such file or directory in C:\Apache\xampp\htdocs\2.0\pr\071217.php on line 2

Fatal error: main() [function.require]: Failed opening required '../header.php' (include_path='.;C:\Apache\xampp\php\pear\') in C:\Apache\xampp\htdocs\2.0\pr\071217.php on line 2