Hi, I wrote a quick couple of lines of code that inserts a user into two other databases durning registration. I accomplished this with hook_user under the $op value of "insert". I want to add a check with this module. The check will search the other two databases for the email and username and make sure a dup is not about to be created. If so I need the user to be redirected back to the register page and user registration aborted. The problem is, that I put such a check and redirect in in my hook_user function, but drupal is still creating the users in it's database and redirecting the registration page with the error. I.E the registration process is not aborted. Maybe I need to use another $op value besides "insert"? Maybe a different hook? Maybe some function I am not aware of? Thanks --Trevor