I have to say it's a bad idea to assume "If I can just prove the 'supernatural' it will prove God for those people." Atheists are liars, by definition. A Barna study (I'm not going to try to look it up just now) found belief in superstitions is EXTREMELY HIGH among "atheists".

Nearly all Satanists go about in public wearing the "atheist" mask. One who travels much in cyberspace cannot help encountering the "atheist" with the number of the beast in his screen name, and that's just the tip of the iceberg. The "atheists" openly perform Satanic rituals, blaspheming and burning Bibles.

They already believe in "supernatural" things. Indeed, why would anyone oppose God who honestly believed God to be man's creation? Actions speak louder than words. One who actually thought like that, if every you encounter him, will not be upset and enraged with the idea you & others might get to heaven.

Dark Matter + Dark Energy = Dark Truth

"We find that such evidence demonstrates that the ID argument is dependent upon setting a scientifically unreasonable burden of proof for the theory of evolution." - Judge Jones Kitzmiller case
http://www.talkreason.org/articles/Falsify.cfm

"To Compel A Man To Furnish Funds For The Propagation Of Ideas He Disbelieves And Abhors Is Sinful And Tyrannical." - Thomas Jefferson

"And can the liberties of a nation be thought secure when we have removed their only firm basis, a conviction in the minds of the people that these liberties are the gift of God? That they are not to be violated but with his wrath?" - Thomas Jefferson