We'll create fresh WordPress site with Dashboard Editor installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin allows you to add whatever you want to the WordPress dashboard through PHP and HTML even Sidebar Widgets. You can also wipe the entire dashboard or individually remove some of the more irritating sections like the Dev news, Planet WordPress and the getting started section.
In WordPress 2.5, the code is cleaner, the plugin is more responsive and you can add both “real” sidebar widgets, or add “fake” ones to match the dashboard.