Probably already gone but.... look up the following ideas using google
Rebuttals of:
Cosmological Argument
Teleological Argument
Ontological Argument
Moral Argument
Also see:
Carl Sagan's invisible dragon in my garage
Refutations of the Bible
Lack of contemporary historical documents to validate scripture
God being unable/unwilling to reveal himself + rebuttal of the freewill objection
Rebuttals of:
Cosmological Argument
Teleological Argument
Ontological Argument
Moral Argument
Also see:
Carl Sagan's invisible dragon in my garage
Refutations of the Bible
Lack of contemporary historical documents to validate scripture
God being unable/unwilling to reveal himself + rebuttal of the freewill objection