There is a Linux driver for this printer, and the user documentation is here:
http://www.support.xerox.com/support/phaser-7760/documentation/enus.html?operatingSystem=linux&fileLanguage=en
It has job accounting and a usage analysis tool. I would read through the documentation and see if the Linux Cups driver allows you to perform that task. As far as step by step setup instructions, I would look at the documentation for that.