This new release stores the metrics using prevayler,
which is very, very cool... I spent some time trying to map things to SQL using hsqldb, but this is so much easier, it's incredible. See www.prevayler.org,
or right here on sourceforge, project prevayler.
This new release also allows you to export metrics to an XML report. That way you can use XSL to further process it to any format you desire.