vac chaos is a vac disabler for mw2. a vac disabler is a program that disables vac so vac doesnt scan you if you have hacks on ingame.
google: vac chaos agentgod
and you'll find it.
note: vac chaos is a PUBLIC vac disabler so IW can patch it. do NOT use it if a new patch comes out or you will be banned!