Solution
How To Redirect Non-WWW To WWW Page
To do that, create/edit a .htaccess file inside your public_html folder. Next, put in the following code into the very first line (remember to change the domain name to your own domain name).
RewriteEngine On
RewriteCond %{HTTP_HOST} ^twopiz.com [NC]
RewriteRule ^(.*)$�http://www.twopiz.com/$1 [L,R=301]