Anthony- There's is no reason to install 4.03 over 4.02, it has no bug fixes nor new features. All it does is add the Curious Labs logo/branding information and enable some mysterious Serial number checking which may open a port to the internet. You can install it over 4.02, though it may complain about files on your HD being newer, but I would hold off until Larry makes a statement about this internet thing. Regards- Lemurtek