Recording someone without their knowledge

Can you record somebody admitting guilt without telliing them? Can you use it in court?

[olive]

We normally recommend you check with your state attorney general's office or the local police dept. before taping--See also "taping phone calls" -- WORLDLawDirect - Taping phone calls -- if you can't tape calls then you normally cannot tape conversations--if you can tape calls then check with your State Attorney General for the laws regarding in-person conversations--