Kathy,
Go to Format > Styles, and in the left box, expand the
Other category. Do you see a Lists item? If so, select it, and look
at the description under the Character preview box on the right to
see if there is a left margin specified. You can change the indent
by clicking the Format button, going to Paragraph, and putting a
value in the Left box under Indentation. See if that changes your
lists' margin.
Hope this helps,
Ben