Unfortunately, since the quote was said in 1987 during Bush's campaign, CNN and NYpost do not have it up. In fact, CNN and NYpost and any other major news media have nothing before 1995-97. The quote of Bush talking about Atheism dates back to a reporter of "American Atheist" who asked Bush what he will do as President for the Atheists. Here's part of that article:
When George Bush was campaigning for the presidency, as incumbent vice president, one of his stops was in Chicago, Illinois, on August 27, 1987. At O'Hare Airport he held a formal outdoor news conference. There Robert I. Sherman, a reporter for the American Atheist news journal, fully accredited by the state of Illinois and by invitation a participating member of the press corps covering the national candidates had the following exchange with then Vice President Bush.
Sherman: What will you do to win the votes of the Americans who are Atheists?
Bush: I guess I'm pretty weak in the Atheist community. Faith in god is important to me.
Sherman: Surely you recognize the equal citizenship and patriotism of Americans who are Atheists?
Bush: No, I don't know that Atheists should be considered as citizens, nor should they be considered patriots. This is one nation under God.
Sherman (somewhat taken aback): Do you support as a sound constitutional principle the separation of state and church?
Bush: Yes, I support the separation of church and state. I'm just not very high on Atheists.