Yes, you can install webmin and SARG.
Squid Analysis Report Generator
Version: 1.200
Last Updated April 11 2005 Website HTTP Jamie Cameron Configure and schedule SARG, a tool for generating reports from Squid and schedule SARG, a tool for generating reports from Squid access logs.
This module is BSD Licenced
http://webadminmodules.sourceforge.net/?page=Servers
You can open your windows web browser and drill down to the Nth degree of each user browsing goat pr0n. Sarg will need to be installed on the squid proxy of course.