Have you tried to install Drupal, and got a message saying your server environment is unsupported because you have register_globals turned on? Have you been unable to change this because your web host (1&1, in my case) doesn’t let you play with PHP’s settings (and quite right too)?

Help is (possibly) at hand! It’s likely that although you can’t configure PHP directly, your host will allow per-directory PHP configuration changes. You do this with a plain-text file called php.ini, which in this case is placed in the root directory of your Drupal install, and contains just one line:

register_globals = off

Hurrah, eh? You can thank me with beer.