I saw your "help" discussion and I would like to help. I went through that phase with my family too at the beginning. And like you I had no idea what to say to counteract them. Now, though, through the help of many wonderful atheists online I have received the ammunition I need, and I would like to pass it on to you.

First, if you have the money for it there are many great books on this topic in the store at http://www.atheists.org/

But if you want free resources try these:

http://www.freethoughtpedia.org/wiki/Top_ten_arguments_for_the_existence_of_God/

[Freethoughtpedia covers the top ten PHILISOPHICAL arguments for the existence of god]

and also [for the "flinging bible verses at you"] try this:

http://www.skepticsannotatedbible.com/