ok! I don't explain me soo good, sorry! I'm a spanish guy and I don't write english so good.
I Say muy future blog, because I'm workin on it, and it's no public. Really, is not a blog, is more like a CMS.
In his CMS website, I want to limit the writers on it. When I finish the web, I will don't make the mateniment of the website, and I don't want that my client make a lot of contributors of the website.
I don´t know If I explain better now.
I don´t know really the way I can do it, but I think in the posibility to make some limit records in the MySQL data base or something like that. I don´t know if wordpress can do that by it self.
Thanks for you patient!