Hi,
I'm afraid its more complex as you portray, since that trivia bot uses ON TEXT events, whilst you cannot use that online.
He'll have to make an ON INPUT event.
Basically, if you're not experienced in scripting, then it is a lost cause to try to edit that trivia bot yourself. I havent seen the code, but as i made an RPGTrivia myself (knowing how advanced and big it can get), i know that you will most likely get lost in all the coding, trying to change online events to offline events.
Of course it depends on how sophisticated and advanced you want this trivia to be. If all you're asking for is the most simplistic trivia that just asks questions at regular intervals, then this can be scripted easily, with basic mirc scripting knowledge.
Who knows, maybe you will find some pre-made offline trivia bots
here Greetz
