openoffice and table of contents

Anyone know how to make a table of contents in Openoffice? The help file says to just set it up at "Heading 1" and it'll take care of itself, but there is no heading one on my document. there is "default" and "Normal" (which is not there when I start, but is somehow in this document).

thoughts?

Cross-posted to openoffice and linux because it's important.

later,
~joe