Redirecting www to non-www?

[David]

Hi, I'm using wordpress and I want to use domain.com instead of http://www.domain.com

I read the best method to avoid problems in the search engines is to go into cpanel and edit the .htaccess file to redirect. However I found 2 difference pieces of code online and since I'm not up on this, just needed some help.



FIRST SAYS THIS CODE:

<ifmodule mod_rewrite.c="">
RewriteEngine On
RewriteBase /
RewriteCond % ^www.example.com [NC]
RewriteRule ^(.*)$ http://example.com/$1 [L,R=301]
</ifmodule>




SECOND SAYS THIS CODE:

RewriteEngine on
RewriteBase /

#Force non-www:
#RewriteCond %{HTTP_HOST} http://www.example.com(.*)$ [NC]
#RewriteRule ^(.*)$ http://example.com%1/$1 [R=301,L]



Really appreciate some help. Thanks.
I know about the wordpress dashboard settings, but that's not enough is it?