In WP 2.5 the WordPress developers tweaked the WP dashboard, making it a bit more usable, looking sort of like Netvibes or iGoogle. Unfortunately, they haven’t seen fit to provide the ability to customize the dashboard “widgets” yet. So what’s the point? Well, it looks better…
Jason of Pressography.com has provided a solution, since the WordPress devs haven’t yet. The Widgetized Admin Dashboard plugin does just what it’s name says. It removes the WordPress Development News and WordPress Planet boxes, and adds a new sidebar to the Widgets screen called “WordPress Dashboard.” You can then put whatever you want on the Dashboard, and re-order the widgets at will. You could even use your themes’s functions.php file to write your own custom widgets, if WordPress and your plugins don’t provide one you would like.