Its easier then you think... First, you must understand the directory structure. Once you do, learn about the files needed to create the extension. You can create extensions of all kind and not only a Toolbar. For you're convenient, rather writing all of the XML code here, I attached the source code completely to this post, so just download it and try it. First, a look at the directory structure, witch is VERY important to understand and follow: - MyToolbar (Root Dir) - - chrome (Sub Dir) - ...