Page not found (error 404)

The page http://www.tgd.altervista.org/index.php?view=weblink&catid=2%3Asiti-utili&id=1%3Ajoomla&option=com_weblinks&Itemid=87 was not found on this server.

This can be due to:

Pay attetion to UPPER and LOWER cases
http://site.altervista.org/Page.html is different from http://site.altervista.org/page.html