I would just like to make sure of one point. Have you read the terms of use of the site you are trying to do this to? They put these things out there for a reason: they don't want you to automate tasks on their websites (usually just for registrations or to unlock an "abused account" (too many successive failed logins -> yahoo does this)). Just make sure you're being a "good customer". Don't be going and looking for trouble :)