in your site Admin go PLUGIN and then look for Firestats and click Activate.
Now DASHBOARD and you'll see all your lovely stats.
You'll want to display your stats so go PRESENTATION>>>WIDGETS and drag and drop your Firestats statstic widget in.You will need to have a widget enabled theme and not all are. im trying to remove the non widgitised them es as widgets are handy.
Here's Eddy's stats on the right
http://fasteddy.thedailypunt.com/
ill go turn them on on the other existing sites.