WordPress.org

Copy the generalstats directory into your WordPress Plugins directory (usually wp-content/plugins). Hint: With WordPress 2.7 and higher you can conduct this step within your Admin Menu.

In the WordPress Admin Menu go to the Plugins tab and activate the GeneralStats plugin.

Navigate to the Settings/GeneralStats tab and customize the stats according to your desires.

If you got widget functionality just drag and drop GeneralStats on your dynamic sidebar in the Appearance Menu. Otherwise, put this code <?php GeneralStatsComplete(); ?> into your sidebar menu (sidebar.php) or where you want the results to be published.

Be happy and celebrate! (and maybe you want to add a link to http://www.neotrinity.at/projects/)