I can't really help, because I'm not a programmer. I can point you in the right direction, though. Here's a good chess programming meta site:
https://adamsccpages.blogspot.com/p/chess-programming-resources.html
(In general, in order to integrate the engine into Arena, your engine would have to conform to either the Winboard or the UCI communication protocol.)
Hello,
I'm a bigginer with chess engines, and i want to create a chess engine and integrate it in Arena Chess GUI. I really don't know to do it so if someone can help me it'll be good.
Thank you