If you previously registered during the preflight test, MOSS3 for instance, you need to re-register. In the dialog box, enter your user name and password. On the next screen enter your password, again. Following the ordering prompts.
Registered users can start ordering data right away.
If you have not already register as a user you should register at least 24 hours before ordering your first data set. Let me know if you have any problems. Currently any data order greater then 50GB will jam the system so that nobody gets data. Also, delete the data order as soon as you retrieve the data to allow orders for other users to be staged. Example Subscription Request Email Note, since it is unknown whether qualified subscritptions are implemented, subscriptions should limited to email notifications and not be used for ordering data.