For those of you who have been the victim of a recent upgrade by your web hosting company and can not get your website to run properly anymore, try adding this to your php scripts:

ini_set('register_globals', '1');

If you want to do this for your entire website and have the ability to use .htaccess files, add this:

php_value register_globals 1

register_globals was turned off with php 4.1.0 and above by default. Your hosting provider may not have taken this into consideration when they did their upgrade. I strongly urge you to re-code your scripts to work without register_globals OR get an updated version of the script you are using.