About VAC detection.
Hi,
Nobody can told you if a Hack is Detected or not.
Why nobody can know it?
Because you can use a hack for 2 days for exemple, and then get banned 2 month later. But you can get ban 2 hours later too.
So, if somebody told you "i used it for 2 days and no ban, it is undetected", you don't have to trust him, and take all fault to yourself if you get banned.
Note that we don't REALY know how VAC work (or i live in a cave and missed something).
So, when you use a hack, don't ask if it is undetected or not, because the guy who answer you is just not ban yet.
Use all hacks at your own risk (privates hacks too).