Yes, simply go to the homepage before logging into the site and select the Sign up now link on the left side of the page. Next select the second option, "I already have a NEX account and would like to use it online". After entering the account number ...
You can find your previous shipments by selecting either the My Shipments link under MyNEX menu. You may also have more than one user ID per account so be sure you have logged in with the correct user ID.
The ITN is returned electronically to the filer, generally by email. You may also log into your AESDirect account, access your records and view the ITN.