Plugin to add Google Analytics tracker, GoStats tracker or different web tracker to each page on your weblog without making any changes to your templa
Zamango Analytics uses few features which were implemented in WordPress v.2.8.0 so it will not work correctly on older versions. Althought I use it myself on wordpress 2.7.4 with few limitaions.
It is very hard to add stats reports to the plugin. In order to keep it fast, plugin just inserts tracking codes to the wordpress pages, so you only can view your reports through apropriate tracking systems.