I don't know about you, but I was slightly confused by the way they set up adding pages, but I've now discovered it's really simple if you know what you're doing.
1. Add the pages gadget to your blog.
2. Click new post. This should take you into the first tab, Posting.
3. See the titles under the tabs, New Post, Edit Posts and Edit Pages? Click Edit Pages.
4. Click NEW PAGE. This will take you into the basic post editor, but instead of posting it will add a new page.
And there you have it. So if you want to add pages, you can, and you won't be running around confused like a headless chicken, as I did xD