Hi,
I've created the plugin.
You need to create an account at wordpress.com:
http://wordpress.com/
and install the wordpress.com stats plugin:
http://wordpress.org/extend/plugins/stats/
Secondly get the "api key" from the wordpress.com profile page and copy it to the api key form field in the wordpress.com stats plugin settings page.
Secondly activate wp-stats-dashboard plugin and fill in your wordpress.com username and password in the settings page.
Best,
Dave