A similar scenario can be done with some custom scripting and RSForm!Pro. Basically a script placed in the Scripts called on form process area. An example is available on the http://www.rsjoomla.com/customer-support/forum/37-rsform-pro/6706-can-rs-forms-be-used-to-register-a-new-site-user.html.
A better one was posted by me on the http://forum.joomla.org/viewtopic.php?f=304&t=436383Quote
Fredo (17.11.2010 (11:11:46))
Hi, I agree with this recommendation, but I would like to add an "user unregistered tool", with advice about what the user is going to do, also NEVER delete super admin user, when finish of deleting the user then finalize the deleted user session, etc.Quote
A similar scenario can be done with some custom scripting and RSForm!Pro. Basically a script placed in the Scripts called on form process area. An example is available on the http://www.rsjoomla.com/customer-support/forum/37-rsform-pro/6706-can-rs-forms-be-used-to-register-a-new-site-user.html.
A better one was posted by me on the http://forum.joomla.org/viewtopic.php?f=304&t=436383Quote