WordPress .htaccess and non-www queries

[kirkvan]

Aloha ~

On all of our domains we run the following mod_rewrite within our root .htaccess file to redirect accesses that don't include the ".www".

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RewriteEngine On
RewriteCond %{HTTP_HOST}!^www\.domain\.tld [NC]
RewriteRule ^(.*)$ [domain.tld...] [R=301]
- - - - - - - - - -

We would appreciate some help learning how to integrate, or add, the above into the standard WordPress mod_rewrite code:

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<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME}!-f
RewriteCond %{REQUEST_FILENAME}!-d
RewriteRule . /index.php [L]
</IfModule>
- - - - - - - - - -

Thanks in advance for any assistance.

Best,
Kirk