How to check if you have mod_rewrite?
Use the following PHP info function to get the details about your PHP version:
Paste this into a new Notepad / BBEdit file
<?php phpinfo(); ?>
Save as info.php
Upload to server. Visit in your browser (www.example.com/info.php)
That will give you info about your php version and mod_rewrite.
The info.php file returns a page outlining the details of your PHP installation. You can see if mod_rewrite is loaded. Under the apache header, look in the Loaded Modules section and see if mod_rewiite is listed.