Can someone tell me what to do about the error message below? I'm a total beginner so need a really idiot-proof step-by-step solution. Thanks!
Warning: require(./wp-blog-header.php) [function.require]: failed to open stream: No such file or directory in /home/content/d/a/p/daphnelim/html/index.php on line 17
Fatal error: require() [function.require]: Failed opening required './wp-blog-header.php' (include_path='.:/usr/local/php5/lib/php') in /home/content/d/a/p/daphnelim/html/index.php on line 17