Howtoforge posted a guide about generating Web Site Statistics with AWStats and JAWStats on Debian Lenny

This tutorial explains how you can generate statistics for your web site with AWStats and JAWStats on a Debian Lenny web server. AWStats is a free powerful and featureful tool that generates advanced web server statistics. JAWStats runs in conjunction with AWStats and produces clear and informative charts, graphs and tables about your website visitors. AWStats is able to create graphical web pages for the statistics, but JAWStats presents this data in a much nicer way - it's much better organized and makes use of Ajax
and Flash.

  Generating Web Site Statistics With AWStats And JAWStats On Debian Lenny