Compare viewing stats of 5 blogs!

I’ve got 5 wordpress blogs running on my own host.
Now I want to show stats on a custom page.

I’ve found out that the WordPress.com-stats plugin contains all stats I would need and I even can register all 5 blogs within it, but how can I suck data out of it to make a script which generates a page showing stats like most viewed blog, most viewed posts? This page would be accessible for the public and not be part of the blogs.

Does anyone have an idea, what would be the best way to do this?