I appologize if I am not understanding your question properly, I had to trust Google to translate for me.
If only the admin is locked out and you have another user that is of the "Super Administrator" role, you can reset the password on the Users page. Go to System --> Users --> Users and Roles. Click on the edit button for admin. At the bottom there is a button for "Reset Password". This will generate a new random password, set the admin password to that, and tell you what the new value is. You should then be able to log in with that.