Hey,
My advice is to be yourself and avoid any conversations about religion, et.al. In reality, what they really need to get is that in spite of what they learn and are taught...there are people in the world (wordly, if you will) that are not as bad as they think. I think that our mission as regular people is to show them that so that they can hopefully put that whole idea to rest. I've done that with my in-laws...there is not much discussion about religion b/c they have grown to respect the fact that I'm not JW nor do I want to be. I guess they just need help understanding that the world is not such a bad place after all!