Must I have an Application ID to get my paypal chain payments working?

Hi
I cannot even register or do anything according to these instructions as per 2.3.2
So i am left wondering if I need to go through this process in order to get chain payments working? If so please write me a guide or something because I sure as hell cannot get it working. I have tried registering on x.com, developer.paypal.com then logging on and using the links to no avail.

You must register this application with PayPal using your business account login to get an Application ID that will work with your API credentials. A bit of a hassle, but worth it! In the near future we will be looking for ways to simplify this process. Register then submit your application while logged in to the developer portal. Note that you do not need an Application ID for testing in sandbox mode. More Information »
View an example form »

Thanks.