First of all, to preston, is the pic under your name smelling his armpit? (Sorry, that's a good natured jibe.) Thanks, I got a good laugh out of it.
On a more serious note, reaching them emotionally is the only way to get through to them. You have to find something personally important to them to speak to them about, and then wait for an opportunity to introduce something positive. Anything they perceive as an attack will be responded to in the like.
I think that letting them talk (and gripe) more than you is the first step. Then making your answers or advice ambiguous. Not all people could handle finding out about the JW-Nazi stuff, or the NGO stuff. It would crush them and their faith in God totally, or (and this is more likely) scream at you, calling you an apostate and devil, and they would never talk to you again. Remember, we don't want to beat them to death with what we've found out. I know that as for myself, finding the truth about 607bce, and the Nazi stuff put me into a depression. I couldn't find answers to anything and I became very close to calling myself an atheist for awhile.
I guess we just have to let them speak, and we can answer intelligently as we can, hoping for an open mind, otherwise there's no other way to teach them.
Ashitaka
"I pray that I may never see the desert again-hear me God."-Robert Bolt