Okay, I am totally new with all this and Im lost. Im designing a fansite and have a banner at the top and 2 colums at the sides and news/updates/content in the middle. I was told I needed CSS in order to update the index page without updating every single page in the site? Is this possible?

Thanks
Adam

CSS is just style and appearance, not content. Please see the FAQ entry How do I include one file in another?

It's true if you talk about updating the LOOK of the page, provided you don't need to make changes to HTML or content.