Cannot log in after adding www. redirect to .htaccess file

[coreyalderin]

I modified my .htaccess file so that non-www redirects to www. I now cannot log in to my admin page.

Here is the code I added:

# Always use www in the domain
# Replace 'example.com' with your domain name
RewriteEngine on
RewriteCond %{HTTP_HOST} ^([a-z.]+)?toolsforchrist\.com$ [NC]
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule .? http://www.%1toolsforchrist.com%{REQUEST_URI} [R=301,L]

Did I do something wrong, or is there something I need to change now?

Thanks
Corey