mod_rewrite is supported. I also rewrite all URL's to the non-www address. I'm sure Google allows for links with & without the www.
I used these rules from http://no-www.org
> RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.domain\.com$ [NC]
RewriteRule ^(.*)$ http://domain.com/$1 [R=301,L]