Lock Changes in a Project Tree

Hi, I need to lock the creation of directories in a project versioned with SVN. Authorized users can change and/or add archives, but when they try to add an directory, SVN block this commit. I know that this can be done with a pre-commit hook, but I have no ideia how can I do this. Any sugestion

Re: Lock Changes in a Project Tree

thanks, I gona look. -- Luis Augusto Silva Lima