How to deal with girls and religion?

Well, I don't think you can convert for someone. It's not really legitimate if you do it that way. Besides, it doesn't seem like you would really convert. You could put on a show but you wouldn't truly believe it and that's harmful to her because it's dishonest and harmful to you in other ways.
I would say go ahead and ask her out. Let her decide if she will date you. If she has made up her mind not to go with anyone who doesn't believe in God, that is her decision and you shouldn't try to change for her, just like she shouldn't change for you.
If you're really serious about it, try to talking to her. Tell her how much you like her and discuss if the differences in your beliefs would be an issue. Definitely don't let the chance go by to ask her, but don't agree to believe you something you don't for her, either.

I'm Catholic so I can sort of relate. For me, I think it's totally okay with whatever religion or lack of a person has, you can't expect someone to believe in something if they just don't. That being said, it'd be really hard for me to get married to someone that doesn't share the same religion because of my family. Not even just my parents but both sides are very big into our religion (my great grandpa was a deacon even) and they all expect me to have a catholic wedding. I'm not sure if I will it all depends. But it's all going to be on the girl. Some are okay with having a nonreligious marriage and working out how to raise the children later on. But some won't be able to get past that, and religion can be a huge part of someones life. If she knows you are atheist however, and pursues you, then go along with it. If the issue comes up later, be honest. You shouldn't have to change your beliefs for someone else unless you really want to. Best of luck:)

I am a Christian, and the Bible says not to be unequally yoked, which means in part that Christians shouldn't really date non-Christians: it's just too much of a difference. But that doesn't mean that you should become a Christian just because you want to date a girl, because that's not what it's about. It's a very intimate thing between you and God. I would encourage you to look further in to Christianity and come up with your own answers (Answers in Genesis is a good place to start if you're into science, or Bible Gateway) but again, that is entirely up to you. God wants us to choose Him.

there is always a chance ! i would pay no mind to who's who snd what's what. I would focus on the persons, that being you and her. Religion in my opinion is only there to help people sleep at night. Besides, have you found out if she is active in her religion? she may not be as churchy as you think. .

As it has been suggested there is nothing to lose if you go ahead and ask her out, let her decide whether she will stand behind her word or she is a christian for conformity. Do keep in mind however that if this relationship happens and it lasts years in the end she is going to want to get married and I don't think family pressure will allow her to agree to a non religious wedding. Also, because I dated a christian girl once too, you'll hear a lot of stupid religion-related things coming out of her mouth. Are you sure you'll be able to cope with it?PS. May I point out here that lack of religious believes is not a religion in itself. So though I reject the term "atheism" as it implies the existence of a deity you don't believe in, atheism in itself is not a religion so you can't "convert" from atheism.PPS. The bible who was written by people also says that you should kill non christians, much like the quran. Are you suggesting a civil war or something between christians and everybody else?