Having some issues

I cannot load it as my index page for my web site. If it is still up you can view it at http://www.jakerobinson.net
This is what I am getting.

Warning: main(./wp-blog-header.php) [function.main]: failed to open stream: No such file or directory in /home/jakerobi/public_html/index.php on line 4

Warning: main(./wp-blog-header.php) [function.main]: failed to open stream: No such file or directory in /home/jakerobi/public_html/index.php on line 4

Fatal error: main() [function.require]: Failed opening required ‘./wp-blog-header.php’ (include_path=’.:/usr/local/lib/php-4.4.7/lib/php’) in /home/jakerobi/public_html/index.php on line 4

I took the index.php from my wordpress file. Not the theme file. What is the dealio?