hello on your site i have see this code :

## Can be commented out if causes errors.
Options FollowSymLinks

# mod_rewrite in use

RewriteEngine On
RewriteCond %{HTTP_HOST} ^MyDomain\.com$ [NC]
RewriteRule ^(.*)$ http://www.MyDomain.com/$1 [R=301,L]

RewriteCond %{HTTP_HOST} !^.*MyDomain\.com [NC]
RewriteRule (.*) http://www.MyDomain.com/$1 [R=301,L]

but it is to do mydomain.com = www.mydomain.com in fact i would like for my site www.mydomain.com = mydomain.com

thanks for your help and great component ijoomla