I am getting the fallowing two error please somebody help.

Code:
Warning: require_once(error.class.php) [function.require-once]: failed to open stream: No such file or directory in C:\wamp\www\include.all.php on line 2

Fatal error: require_once() [function.require]: Failed opening required 'error.class.php' (include_path='.;C:\php5\pear') in C:\wamp\www\include.all.php on line 2
Thank you