Hello List Mark said he couldn't access the website Familyrelatives.com because of his Mac computer incompatibility. Familyrelatives uses a DjVu plug-in. A small number of books on the site archive.org also require this plug-in. Perhaps this link called "DjVu Browser Plug-in Does Not Work in Safari on Mac OS X 10.6" may assist http://www.caminova.net/en/support/snow_leopard_err.aspx Cheers Maureen