I'm afraid we won't be able to help you step by step so that you make this, as it requires good computer science knowledge (from your previous posts I fear that's not really the case).
If you have no knowledge of how servers work (I mean: web servers, ftp servers), have no network knowledge (ip adress, port), and have no good mastery over your operating system (i.e: in order to run programs from command line), then you may forget it, unless you're really motivated and are ready to spend some time reading documentation (starting with this: http://openarena.wikia.com/wiki/Servers
Your post is not in the right section of the forum, please pay attention to where you post, this is valid on every internet forum you go.Before posting new topics, I heavily suggest you to read a lot
of what is in this forum and on the wiki
, so you get a better view of this game. We try to be helpful but I fear we can't train people individually on every matters.