How to get an indented pages menu

When I use the side bar to present a page list then the list is presented as a straight list that ignores parent and child indenting so the format is lost in the sidebar. So a page list as;

Section Page1
- - - Child page 1
- - - Child page 2
Section Page2
- - - Child page 1
- - - Child page 2
- - - - - - Child of Child

Is presented as;

Section Page1
Child page 1
Child page 2
Section Page2
Child page 1
Child page 2
Child of Child

I've tried adding in css from another theme edited to work with the bpside div but this does not work. How can I do this?