[VeryTallMidget]

But you create anti-cheat soft that detects something client side and then sends info to server side ?
If this program communicates with server it will probably send something that indicates if the player is using cheats or not ?
So this info should be crypted in some way, if not, its easy to manipulate it to send false info...
This crypted info should depend on something maybe from client side or something that server will send.

This is how its done:
You create protective system and then start to abuse it in any way possible, this is how you will detect flaws.
You build a castle and to make it more secure, you try to brake in, any way possible to detect weak points.