I was looking around again at web design tutorials and came across this tutorial on creating a site for drupal. Drupal is an open source CMS.
http://www.gomediazine.com/tutorials/create-a-killer-band-site-with-drupal-introduction/
I am not familiar with Drupal and will probably never use it, but the first couple of steps in the tutorial series can be applied generally to the design of any site using Illustrator. I have listed them below for quick access.
Read Part 1 - Design it Illustrator
Read Part 2 - Slicing it Illustrator
Read Part 3 - XHTML