Heh.. I just was playing game and got a message something like "modified version detected" and it kicked me out of the game. Must be on the servers end because my game isn't modified and I can't find the server I was on anymore.
how aimbots work is by changing modle colors so that an aimbot progrm can find them on the screen and shoot them. Around 1.2 or 1.3 i threw one on to see what would happen with DB and it totally kicked ass. You could see open team mates and players covering them all the way across the map. Its very useful for everything but shooting and goaltending which would be what if anything, i would want to cheat at.
When you do the new skinning of the modles keep that in mind because it does improve gameplay be getting less interceptions and volley spams.