Practicalecommerce.com has a nice little video tutorial about how to do CSS design.

Designing search engine friendly websites can be intimidating, particularly for designers who are just learning how to use CSS formatting. One of the most intimidating aspects to learning CSS design is creating page layouts that do not rely on tables. In the first of a two-part video tutorial by Practical eCommerce’s online director Brian Getting, we will look at some of tricks and techniques used to create flawless CSS page layouts.