Ok no worries man heres your tut.
Step one:
Copy this code for a script into notepad, and save it as koth.fpi:
;Artificial Intelligence Script
;Header
desc = King of the Hill
;Triggers
:state=0,anywithin=75:timerstart,state=2
:state=0,anyfurther=80:timerstart
:state=2,timergreater="insert time limit to hold hill",anywithin=75:objmet=1,state=0
;End of Script
Make your map, before you switch it to multiplayer, put a dynamic entity in the spot you want the "hill" to be, assign the koth.fpi as the main fpi for the dynamic object.
Go in your setup.ini find these lines and change them to the number shown:
gameobjectivetype=1
matchtype=2