Anyone can using google sitemap for mediawiki?

I think one of these instruction is incorrect or there need some more information to add, i have try this for 3 months and still not success




1. I install mediawiki from one click panel, and reference to this installation tutorial http://wiki.dreamhost.com/index.php/MediaWiki

If your wiki is install under a "www." subdomain

so i install it to www.yourdomain.com/w
and the content results are www.yourdomain.com/wiki/Content_title

the installation is success here is http://www.faq.web.id/wiki/




2. the next step is to install google sitemap for mediawiki
http://liyuhua.com/wiki/MediaWiki_Tips_and_Tricks
or
http://www.thinklemon.com/wiki/MediaWiki_talk:Google_Sitemaps


its says to create new file sitemap.xml.php and put it in mediawiki installation root

i have upload it http://www.faq.web.id/wiki/Sitemap.xml.php

but it cant open the xml file, its just open the wiki content page





please help guys whats wrong with dreamhost installation or they instruction


why they can use it

http://liyuhua.com/wiki/MediaWiki_Tips_and_Tricks
http://liyuhua.com/wiki/sitemap.xml.php


http://www.thinklemon.com/wiki/MediaWiki_talk:Google_Sitemaps
http://www.thinklemon.com/wiki/sitemap.xml.php