Remove index.php

When linking back to the main part of my forum from anywhere else, it ends with index.php. How do I remove this so I always see:

http://www.newyorksportsboard.com

instead of

http://www.newyorksportsboard.com/index.php

?

Use the code below in your forum root .htaccess file.

RewriteCond %{THE_REQUEST} index\.php
RewriteCond %{QUERY_STRING} ^$
RewriteRule ^index\.php$ http://www.changethistoyourdomainname.com/ [L,R=301]