Web Design – Creating the Web 2.0 Look
Even though it's now becoming outdated, sixrevisions.com have a good article on how to create a web 2.0 look in Photoshop using the 960 grid system. It's a two part article that will include how to code it in CSS.

[...] mentioned previously that sixrevisions.com gave a good tutorial on how to create the Web 2.0 look in photoshop. They’ve [...]