First of all, Welcome to SF, you have come to the right place.
Secondly: Why is it that you want to kill yourself? I mean, we can't do much if we don't know whats wrong. Are you planning on doing it tonight? Are you in the USA? Because there is a suicide hotline that is 1-800-Suicide. They are normally very helpful, and nice.
Thirdly: I'm sure that there are many people that care about you and would hate to lose you, including me, and anyone else who will reply to this post.
Take care. Ash