I am no quite sure what you need. You already have translators rights on userbase. Are you experiencing problems?
If you need a new KDE identity account or if you need help with an existing account you should probable ask our sys admins: Log in to your identity account identity.kde.org (same login as on UserBase); there is a link to the sys admins at the bottom of the page.
If you already have a new account, I need your new username in order to give you translators rights for that user.