[Zope] SiteRoot Issues

Hi, I've created a SiteRoot to point to a subfolder of the root folder /subfolder. Now I can't get back to the root folder / or remove the SiteRoot entry. How do I get back to the / root folder or go back and edit/remove the SiteRoot entry that I've just did. I checked the "Undo" tab by my SiteRoot entry wasn't there. Thanks for any suggestions.