Having register_globals on is a security risk on your server. I don't know enough of that PHP mumbo jumbo to know exactly why it's a problem, but I'm of the mind that the less stuff you have running on the server the better off you are anyways..
Sometimes you have something like a shopping cart software that needs register_globals on. Normally you can just add the following line to the .htaccess file in your web directory:
php_flag register_globals on
Sometimes this doesn't work, though. After much messing around with this, I finally figured it out. All you need to do is put a file named php.ini in the directory where you need the register_globals enabled.
Make a file called php.ini and edit it, add just this one line:
register_globals = On
Upload it to the directory and you're good.
