nedronav

Hi, I'm under pressure to get a site set up before I'm fully trained in building it. I have a moderate understanding of html, a basic understanding of php, and am in the midst of learning Dreamweaver. The problem I'm running into is that the site will have lots of pages, but I need the banner and sidebar to be the same for every page. Banner/sidebar content will need to be changed frequently. To avoid having to update dozens of pages separately each time, I'd like all my pages to pull the data for their banner/sidebar from one place. If anyone can tell me how to do this, I'd really appreciate it. Thanks