hmm. If you provided false information, perhaps Dreamhosts system automatically declined your new account? Did you get charged for it?
You could perhaps contact support, explain your problem, and ask if they could resend information to the E-mail associated with the new web-ID you set up.
Just an FYI, you should have loged into your normal web-id and added the new service in there, that would have made the domain apart of your normal web-id.