Help: multi-user blog?

[eluser]iDenta[/eluser]
Thank you all for your replys!

Maybe my explanation of what i wanted was a little hard to understand (english isn't my first language)

I was basicly looking for any information (or code snippets ) that could take me in the right direction to adding multi-site support, like how i should set up my database and tables, how to get every usersite(blog) in a subfolder/subdomain and so on...

But i will take a look at the Codigniter Directory, and see if i can find an application that has the functionality that i'm looking for.

Thanks again.