I need a sidebar menu

My site was built for me by a “professional”, she installed menu in the header which allows room only for a few pages, she put all my other pages as “articles”.
I want all my content except the blog as static pages itemised in a vertical menu on the left of the page. The site I built myself several years ago with Frontpage did this automatically. But I’ve spent hours looking in codex, forums, etc and trying different things, and I can’t find out how to achieve this simple task!
Theme is twenty-ten.

Pete