hadn't really seen a topic on this and as a long time game modder [newbie fpsc user] I feel like its good knowledge.
You will want the angus resource hacker [just search in google], after install just run the resource hacker and open your .exe in it.
It will display the stock pyramid image thingy fpsc uses, next find your image you would like as display picture, convert it to .ico online [just google many sites do this] and you are set!
Just a small tweak but definitely will personalize your game a bit more-so.
