ok, try this code
Code:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^arvyre\.com [NC]
RewriteRule ^(.*)$ http://www.arvyre.com/$1 [R=301,L]
if it doesn't work, try this one
Code:
RewriteEngine on
RewriteCond %{HTTP_HOST} !^www\.arvyre\.com [NC]
RewriteRule (.*) http://www.arvyre.com/$1 [R=301,L]