The trick to getting good help is providing good information. I am assuming you are using something to translate your native language into english. That is okay, but you might get a friend to help you, humans tend to be better translators.
What we need to help you:
Information on how you installed zoneminder.
What Linux distribution you are using? I'm betting you are using Debian or a derivative as it appears you are using the Debian package for apache2. (Thats why you get the "It Works!" page when you visit
http://localhost/)
What version of zoneminder?
Did you get the package from your distribution or compile from source?
Did you get any errors in the process of installing?