[Zope] CMF Site as default zope site

Hi all, I know this question may is stupid for a lot of you, but I did try now for to many hours without success...... How do I get a Plone Site in Zope (CMF Plone) as default site. I can access right now with http://domain/Plone but I want it to be http://domain <http://domain/> At the moment the Zope Quick Start is there. Thanks for your help. Freundliche Grüsse Stefan Leemann