When a new user registers, that person receives an email confirming their application (which then requires admin approval).
Is it possible that the email requires that the user confirm that he/she is the person that registered? When they confirm their request to register, the administrator is then notified of their registration request.
Summarizing the process:
1. "New User" registers at the site
2. "New User" receives initial confirmation email and is then required to confirm their request to register
3. "New User" clicks on the confirmation link
4. "New User" receives email that states that they have confirmed their request to register and that the "Administrator" must review and approve their registration
5. At the same time as step 4, "Administrator" receives the confirmation email and can accept or reject the "New User" registration
Thanks