so my friend and I have set up a private dalek mod server to make all kinds of doctor who themed builds, however my friend can sometimes be a bit of a griefer.

So I was wondering is there was a command or setting in the config to disable nitro-9 on servers like they have on the official public server ?

Go into the config (in the server files not your personal ones) and I think there is an option to turn it off.

I looked under configs but it just looks empty...

 It should be in the \config directory.

look there is nothing there /\

In \config there is a .cfg file named "thedalekmod" open that in Word/Notepad/Notpad++ and there should be an option in there

Make sure you launch the server first so that it generates the config file. If it still doesn't generate then just copy it over from %appdata%/.minecraft/config/Dalek Mod