Failed opening required ‘wp-blog-header.php’ while using cformsII wordpress plugin

Problem
All right, so I was trying to insert a cforms II contact form in WordPress 2.7.0 Installation and was facing this error in a pop-up dialog box:
Warning: require_once(wp-blog-header.php) [function.require-once]: failed to open stream: No such file or directory in /home/wisdom/public_html/prashna/wp-content/plugins/cforms/js/insertdialog25.php on line 9
Fatal error: require_once() [function.require]: Failed opening required ‘wp-blog-header.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/wisdom/public_html/prashna/wp-content/plugins/cforms/js/insertdialog25.php on line [...]

How to get the enhanced Rich text editing buttons in wordpress.com editor?

The why — Bloggers need Rich text editing..
If you are a newbie wordpress.com blogger, chances are that at some point you would have pulled your hair out trying to figure out how the heck to display the rich text editing buttons that would give you the MS word like editing features. I definitely remember doing [...]