Here are the two demos you ask for.
On the first one you can see a Aimbot and Wallhack. The Aimbot is bind to a key so he only snaps if he push that key.
On the other you can see a Wallhack. with r_shownormals 1 (type in console) you can clearly see how he triggers enemys throu walls.
Hope that helps
Btw. If you want to learn something about cheats just read steves Thread
http://www.dswp.de/old/lamas-corner/cheat-detecting-t892.html
or just install mumble and ask one of us when we are online to watch one or two demos together to make clear what is cheat and what is not. Every new mod can do that if he wants