If what you are looking for is a website style of blog then that is possible. Staff have provided this support documentation entry. > http://en.support.wordpress.com/using-wordpress-to-create-a-website/

There is only one dynamic page in a blog and we cannot post to more that one page. What’s critical is to understand when creating a website structure the following:

1. The differences between pages and posts and the impact of choosing to restruture a blog to become page based.
http://en.support.wordpress.com/post-vs-page/
http://onecoolsitebloggingtips.com/2010/05/12/better-blogging-at-wordpress-com-pages-and-posts/

2. We organize our posts by use of categories and how to set up custom menus. Although we cannot post to more than one page in a blog we can create the appearance that we have done that by setting up a custom menu and displaying Categories in tabs along the horizontal navigation menu. That feature is available for some themes but not for all themes.
Instructions > custom menus > http://en.support.wordpress.com/menus/
Please read http://wpbtips.wordpress.com/2010/06/30/posts-on-pages/

I would like something like that, but instead of just single menu items in the bar, I would like drop down menus. Is that possible on wordpress.COM, the free blog hosting service?

If so, how?