Help with case sensitivity issues

I tried adding your code to my current .htaccess file and still if I type 7Star or 7star I end up at my error page. I have pasted my .htaccess file below so you can see what I ended up with after adding your code. Below that will be my original .htaccess code so you can compare and hopefully point me in the right direction.

<--begin new .htaccess file-->

AddType x-mapp-php5 .php
Options +FollowSymlinks
RewriteEngine On
RewriteRule ^7Star.php /7STAR.php [r=301]
RewriteRule ^7star.php /7STAR.php [r=301]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.php) /error.php

<--end new .htaccess file-->
<--begin original .htaccess file-->
AddType x-mapp-php5 .php

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.php) /error.php

<--end original .htaccess file-->