[Zope] rewriter product

Hi, I would like to use this product in my site but I cannot seem to get it to work: it is not clear to me the difference between the ' rewriter ' the ' rewriter folder' and the 'rewriter item' and when I type in a URL to test redirection I just get the default Zope index_html page. Can anyone help? TIA Marie Robichon Web Task Force European Synchrotron Radiation Facility BP 220 38043 Grenoble Cedex France http://www.esrf.fr Tel: (33) 04 76 88 21 86 Fax: (33) 04 76 88 24 27