unreal modding?

hey,
Any of ye unreal mod gurus?

im working on this a.i. idea and i need to record actions of the human player in this game,specifically what a player did at such and such a point?

the whole unrealscript seems failry straight forward but the resource on it are fairly skim? no real api, so i dont have a clue what classes i should be extending?

i had one idea it was the PlayerPawn class but no i think its HumanBot class?

any help or points would be appreciated.